Diheterocyclic metalloprotease inhibitors

ABSTRACT

The invention provides compounds of formula                    
     as described in the claims, or an optical isomer, diastereomer or enantiomer thereof, or a pharmaceutically-acceptacle salt, or biohydrolyzable amide, ester, or imide thereof are useful as inhibitors of metalloproteases. Also disclosed are pharmaceutical compositions and methods of treating diseases, disorders and conditions characterized by metalloprotease activity using these compounds or the pharmaceutical compositions containing them.

CROSS REFERENCE

This is a divisional application of U.S. Ser. No. 08/918,957, filed Aug. 26, 1997, now U.S. Pat. No. 6,121,258 which claimed priority to provisional application Ser. No. 60/024,846, filed Aug. 28, 1996.

TECHNICAL FIELD

This invention is directed to compounds which are useful in treating diseases, disorders and conditions associated with unwanted metalloprotease activity.

BACKGROUND

A number of structurally related metalloproteases [MPs] effect the breakdown of structural proteins. These metalloproteases often act on the intercellular matrix, and thus are involved in tissue breakdown and remodeling. Such proteins are referred to as metalloproteases or MPs. There are several different families of MPs, classified by sequence homology. Several families of known MPs, as well as examples thereof, are disclosed in the art.

These MPs include Matrix-Metallo Proteases [MMPs], zinc metalloproteases, many of the membrane bound metalloproteases, TNF converting enzymes, angiotensin-converting enzymes (ACEs), disintegrins, including ADAMs (See Wolfsberg et al, 131 J. Cell Bio. 275-78 October, 1995), and the enkephalinases. Examples of MPs include human skin fibroblast collagenase, human skin fibroblast gelaunase, human sputum collagenase, aggrecanse and gelatinase, and human stromelysin. Collagenase, stromelysin, aggrecanase and related enzymes are thought to be important in mediating the symptomatology of a number of diseases

Potential therapeutic indications of MP inhibitors have been discussed in the literature. See for example, U.S. Pat. No. 5,506,242 (Ciba Geigy Corp.); U.S. Pat. No. 5.403,952 (Merck & Co.); PCT published application WO 96/06074 (British Bio Tech Ltd); PCT Publication WO 96/00214 (Ciba Geigy); WO 95/35275 (British Bio Tech Ltd); WO 95/35276 (British Bio Tech Ltd); WO 95/33731 (Hoffman-LaRoche); WO 95/33709 (Hoffman-LaRoche); WO 95/32944 (British Bio Tech Ltd); WO 95/26989 (Merck); WO 9529892 (DuPont Merck); WO 95/24921 (Inst. Opthamology); WO 95/23790 (SmithKline Beecham); WO 95/22966 (Sanofi Winthrop); WO 95/19965 (Glycomed); WO 95 19956 (British Bio Tech Ltd); WO 95/19957 (British Bio Tech Ltd); WO 95/19961 (British Bio Tech Ltd) WO 95/13289 (Chiroscience Ltd.); WO 95/12603 (Syntex); WO 95/09633 (Florida State Univ); WO 95/09620 (Florida State Univ.); WO 95104033 (Celltech); WO 94/25434 (Celltech); WO 94/25435 (Celltech); WO 93/14112 (Merck); WO 94/0019 (Glaxo); WO 93/21942 (British Bio Tech Ltd); WO 92/22523 (Res. Corp. Tech. Inc.); WO 94/10990 (British Bio Tech (Yamanouchi); and British patents GB 2282598 (Merck) and GB 2268934 (British Bio Tech Ltd); Published European Patent Applications EP 95/684240 (Hoffman LaRoche); EP 574758 (Hoffman LaRoche); EP 575844 (Hoffman LaRoche); Published Japanese applications; JP 08053403 (Fujusowa Pharm. Co. Ltd.); JP 7304770 (Kanebo Ltd.); and Bird et al J. Med Chem vol. 37, pp. 158-69 (1994). Examples of potential therapeutic uses of MP inhibitors include rheumatoid arthritis (Mullins. D. E., et al., Biochim. Biophys. Acta. (1983) 695:117-214); osteoarthritis (Henderson, B., et al., Drugs of the Future (1990) 15:495-508); the metastasis of tumor cells (ibid, Broadhurst, M. J., et al., European Patent Application 276,436 (published 1987), Reich, R., et al., 48 Cancer Res. 3307-3312 (1988); and various ulcerations or ulcerative conditions of tissue. For example, ulcerative conditions can result in the cornea as the result of alkali bums or as a result of infection by Pseudomonas aeruginosa, Acanthamoeba, Herpes simplex and vaccinia viruses.

Other examples of conditions characterized by undesired metalloprotease activity include periodontal disease, epidermolysis bullosa, fever, inflammation and scleritis (Cf. DeCicco et al, WO 95 29892 published Nov. 9, 1995).

In view of the involvement of such metalloproteases in a number of disease conditions, attempts have been made to prepare inhibitors to these enzymes. A number of such inhibitors are disclosed in the literature. Examples include U.S. Pat. No. 5,183,900, issued Feb. 2, 1993 to Galardy; U.S. Pat. No. 4,996,358, issued Feb. 26, 1991 to Handa, et al.; U.S. Pat. No. 4,771,038, issued Sep. 13, 1988to Wolanin, et al.; U.S. Pat. No. 4,743,587, issued May 10, 1988 to Dickens, et al., European Patent Publication Number 575,844, published Dec. 29, 1993 by Broadhurst, et al.; International Patent Publication No. WO 93/09090, published May 13, 1993 by Isomura, et al.; World Patent Publication 92/17460, published Oct. 15, 1992 by Markwell et al.; and European Patent Publication Number 498,665, published Aug. 12, 1992 by Beckett. et al.

Metalloprotease inhibitors are useful in treating diseases caused, at least in part, by breakdown of structural proteins. Though a variety of inhibitors have been prepared, there is a continuing need for potent matrix metalloprotease inhibitors useful in treating such diseases. Applicants have found that, surprisingly, compounds of the present invention are potent metalloprotease inhibitors.

OBJECTS OF THE INVENTION

Thus it is an object of the present invention to provide compounds useful for the treatment of conditions and diseases which are characterized by unwanted MP activity.

It is also an object of the invention to provide potent inhibitors of metalloproteases.

It is a further object of the invention to provide pharmaceutical compositions comprising such inhibitors.

It is also an object of the invention to provide a method of treatment for metalloprotease related maladies.

SUMMARY OF THE INVENTION

The invention provides compounds which are useful as inhibitors of metalloproteases, and which are effective in treating conditions characterized by excess activity of these enzymes. In particular, the present invention relates to a compound having a structure according to Formula (I)

wherein

R₁ is H;

R₂ is hydrogen, alkyl, or acyl;

Ar is COR₃ or SO₂R₄; and

R₃ is alkoxy, aryloxy, heteroaryloxy, alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and alkylarylamino;

R₄ is alkyl, heteroalkyl, aryl, or heteroaryl, substituted or unsubstituted;

X is O, S, SO, SO₂, or NR₅, wherein R₅ is independently chosen from hydrogen, alkyl, heteroalkyl, heteroaryl, aryl, SO₂R₆, COR₇, CSR₈. PO(R₉)₂ or may optionally form a ring with W or Y; and

R₆ is alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and alkylarylamino;

R₇ is hydrogen, alkoxy, aryloxy, heteroaryloxy, alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and alkylarylamino;

R₈ is alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and alkylarylamino;

R₉ is alkyl, aryl, heteroaryl, heteroalkyl;

W is hydrogen or one or more lower alkyl moieties, or is an alkylene, arylene or heteroarylene bridge between two adjacent or nonadjacent carbons (thus forming a fused ring);

Y is independently one or more of hydrogen, hydroxy, SR₁₀, SOR₄, SO₂R₄, alkoxy, amino, wherein amino is of formula NR₁₁, R₁₂, wherein R₁₁ and R₁₂ are independently chosen from hydrogen, alkyl, heteroalkyl, heteroaryl, aryl, SO₂R₆, COR₇, CSR₈, PO(R₉)₂; and

R₁₀ is hydrogen, alkyl, aryl, heteroaryl;

Z is nil, a spiro moiety or an oxo group substituted on the heterocyclic ring;

n is 1-4.

This structure also includes an optical isomer, diastereomer or enantiomer for Formula (I), or a pharmaceutically-acceptable salt, or biohydrolyzable amide, ester, or imide thereof.

These compounds have the ability to inhibit at least one mammalian metalloprotease. Accordingly, in other aspects, the invention is directed to pharmaceutical compositions containing the compounds of Formula (I), and to methods of treating diseases characterized by unwanted metalloprotease activity using these compounds or the pharmaceutical compositions containing them.

Metalloproteases which are active at a particularly undesired location (e.g., an organ or certain types of cells) can be targeted by conjugating the compounds of the invention to a targeting ligand specific for a marker at that location such as an antibody or fragment thereof or a receptor ligand. Conjugation methods are known in the art.

The invention is also directed to various other processes which take advantage of the unique properties of these compounds. Thus, in another aspect, the invention is directed to the compounds of Formula (I) conjugated to solid supports. These conjugates can be used as affinity reagents for the purification of a desired metalloprotease.

In another aspect, the invention is directed to the compounds of Formula (I) conjugated to label. As the compounds of the invention bind to at least one metalloprotease, the label can be used to detect the presence of relatively high levels of metalloprotease, preferably a matrix metalloprotease in vivo or in vitro cell culture.

In addition, the compounds of Formula (I) can be conjugated to carriers which permit the use of these compounds in immunization protocols to prepare antibodies specifically immunoreactive with the compounds of the invention. Typical conjugation methods are known in the art. These antibodies are then useful both in therapy and in monitoring the dosage of the inhibitors.

DETAILED DESCRIPTION

The compounds of the present invention are inhibitors of mammalian metalloproteases, pharmaceutically-acceptable salt, or biohydrolyzable amide, ester, or imide thereof.

Throughout this disclosure, publications and patents are referred to in an effort to fully describe the state of the art. All references cited herein are hereby incorporated by reference.

Definitions and Usage of Terms:

The following is a list of definitions for terms used herein.

“Acyl” or “carbonyl” is described as a radical which could be formed by removal of the hydroxy from a carboxylic acid (i.e., R—C(═O)—). Preferred acyl groups include (for example) acetyl, formyl, and propionyl.

“Acyloxy” is an oxy radical having an acyl substituent (i.e., —O—acyl); for example, —O—C(═O)—alkyl.

“Alkoxyacyl” is an acyl radical (—C(═O)—) having an alkoxy substituent (i.e., —O—R), for example, —C(═O)—O—alkyl. This radical can be referred to as an ester.

“Acylamino” is an amino radical having an acyl substituent (i.e., —N—acyl); for example. —NH—C(═O)—alkyl.

“Alkenyl” is an unsubstituted or substituted hydrocarbon chain radical having 2 to 15 carbon atoms; preferably from 2 to 10 carbon atoms; more preferably from 2 to 8; except where indicated. Alkenyl substituents have at least one olefinic double bond (including, for example, vinyl, allyl and butenyl).

“Alkynyl” is an unsubstituted or substituted hydrocarbon chain radical having 2 to 15 carbon atoms; preferably from 2 to 10 carbon atoms; more preferably from 2 to 8; except where indicated. The chain has at least one carbon-carbon triple bond.

“Alkoxy” is an oxygen radical having a hydrocarbon chain substituent, where the hydrocarbon chain is an alkyl or alkenyl (i.e., —O-alkyl or —O-alkenyl). Preferred alkoxy groups include (for example) methoxy, ethoxy, propoxy and allyloxy.

“Alkoxyalkyl” is an unsubstituted or substituted alkyl moiety substituted with an alkoxy moiety (i.e., —alkyl—O—alkyl). Preferred is where the alkyl has 1 to 6 carbon atoms (more preferably 1 to 3 carbon atoms), and the alkyoxy has 1 to 6 carbon atoms (more preferably 1 to 3 carbon atoms).

“Alkyl” is an unsubstituted or substituted saturated hydrocarbon chain radical having 1 to 15 carbon atoms; preferably from 1 to 10 carbon atoms; more preferably 1 to 4; except where indicated. Preferred alkyl groups include (for example) substituted or unsubstituted methyl, ethyl, propyl, isopropyl, and butyl.

As referred to herein, “spiro cycle” or “spiro cyclic” refers to a cyclic moiety sharing a carbon on another ring. Such cyclic moiety may be carbocyclic or heterocyclic in nature. Preferred heteroatoms included in the backbone of the heterocyclic spirocycle include oxygen, nitrogen and sulfur. The spiro cycles may be unsubstituted or substituted. Preferred substituents include oxo, hydroxy, alkyl, cycloalkyl, arylalkyl, alkoxy, amino, heteroalkyl, aryloxy, fused rings (e.g., benzothiole, cycloalkyl, heterocycloalkyl, benzimidizoles, pyridylthiole, etc., which may also be substituted) and the like. In addition, the heteroatom of the heterocycle may be substituted if valence allows. Preferred spirocyclic ring sizes include 3-7 membered rings.

Alkylene refers to an alkyl, alkenyl or alkynyl which is diradical, rather than a radical. “Hetero alkylene” is likewise defined as a (diradical) alkylene having a heteroatom in its chain.

“Alkylamino” is an amino radical having one (secondary amine) or two (tertiary amine) alkyl substituents (i.e., —N—alkyl). For example, methylamino (—NHCH₃), dimethylamino (—N(CH₃)₂), methylethylamino (—N(CH₃)CH₂CH₃).

“Aminoacyl” is acyl radical having an amino substituent (i.e., —C(═O)—N); for example, —C(═O)—NH₂. The amino group of the aminoacyl moiety may be unsubstituted (i.e., primary amine) or may be substituted with one (secondary amine) or two (i.e., tertiary amine) alkyl groups.

“Aryl” is an aromatic carbocyclic ring radical. Preferred aryl groups include (for example) phenyl, tolyl, xylyl, cumenyl, naphthyl, biphenyl and fluorenyl. Such groups may be substituted or unsubstituted.

“Arylalkyl” is an alkyl radical substituted with an aryl group. Preferred arylalkyl groups include benzyl, phenylethyl, and phenylpropyl. Such groups may be substituted or unsubstituted. “Arylalkylamino” is an amine radical substituted with an arylalkyl group (e.g., —NH-benzyl). Such groups may be substituted or unsubstituted.

“Arylamino” is an amine radical substituted with an aryl group (i.e., —NH-aryl). Such groups may be substituted or unsubstituted.

“Aryloxy” is an oxygen radical having an aryl substituent (i.e., —O—aryl). Such groups may be substituted or unsubstituted.

“Carbocyclic ring” is an unsubstituted or substituted, saturated, unsaturated or aromatic, hydrocarbon ring radical. Carbocyclic rings are monocyclic or are fused, bridged or spiro polycyclic ring systems. Monocyclic carbocyclic rings generally contain 4 to 9 atoms, preferably 4 to 7 atoms. Polycyclic carbocyclic rings contain 7 to 17 atoms, preferably from 7 to 12 atoms. Preferred polycyclic systems comprise 4-, 5-, 6- or 7-membered rings fused to 5-, 6-, or 7-membered rings.

“Carbocycle—alkyl” is an unsubstituted or substituted alkyl radical substituted with a carbocyclic ring. Unless otherwise specified, the carbocyclic ring is preferably an aryl or cycloalkyl, more preferably an aryl. Preferred carbocycle—alkyl groups include benzyl, phenylethyl and phenylpropyl.

“Carbocycle-heteroalkyl” is an unsubstituted or substituted heteroalkyl radical substituted with a carbocyclic ring. Unless otherwise specified, the carbocyclic ring is preferably an aryl or cycloalkyl; more preferably an aryl. The heteroalkyl is preferably 2-oxa-propyl, 2-oxa-ethyl, 2-thia-propyl, or 2-thia-ethyl.

“Carboxyalkyl” is an unsubstituted or substituted alkyl radical substituted with a carboxy (—C(═O)OH) moiety. For example, —CH₂—C(═O)OH.

“Cycloalkyl” is a saturated carbocyclic ring radical. Preferred cycloalkyl groups include (for example) cyclopropyl, cyclobutyl and cyclohexyl.

“Cycloheteroalkyl” is a saturated heterocyclic ring. Preferred cycloheteroalkyl groups include (for example) morpholinyl, piperadinyl, piperazinyl, tetrahydrofuryl and hydantoinyl.

“Fused rings” are rings that are superimposed together such that they share two ring atoms. A given ring may be fused to more than one other ring. Fused rings are contemplated in heteroaryl, aryl and heterocycle radicals or the like.

“Heterocycle—alkyl” is an alkyl radical substituted with a heterocyclic ring. The heterocyclic ring is preferably a heteroaryl or cycloheteroalkyl; more preferably a heteroaryl. Preferred heterocycle alkyl include C₁-C₄ alkyl having preferred heteroaryl appended to them. More preferred is, for example, pyridyl alkyl, and the like.

“Heterocycle-heteroalkyl” is an unsubstituted or substituted heteroalkyl radical substituted with a heterocyclic ring. The heterocyclic ring is preferably an aryl or cycloheteroalkyl; more preferably an aryl.

“Heteroatom” is a nitrogen, sulfur or oxygen atom. Groups containing one or more heteroatoms may contain different heteroatoms.

“Heteroalkenyl” is an unsubstituted or substituted unsaturated chain radical having 3 to 8 members comprising carbon atoms and one or two heteroatoms. The chain has at least one carbon-carbon double bond.

“Heteroalkyl” is an unsubstituted or substituted saturated chain radical having 2 to 8 members comprising carbon atoms and one or two heteroatoms.

“Heterocyclic ring” is an unsubstituted or substituted, saturated, unsaturated or aromatic ring radical comprised of carbon atoms and one or more heteroatoms in the ring. Heterocyclic rings are monocyclic or are fused, bridged or spiro polycyclic ring systems. Monocyclic heterocyclic rings contain 3 to 9 atoms, preferably 4 to 7 atoms. Polycyclic rings contain 7 to 17 atoms, preferably from 7 to 13 atoms.

“Heteroaryl” is an aromatic heterocyclic ring, either monocyclic or bicyclic radical. Preferred heteroaryl groups include (for example) thienyl, furyl, pyrrolyl, pyridinyl, pyrazinyl, thiazolyl, pyrimidinyl, quinolinyl, and tetrazolyl, benzo thiazolyl, benzofuryl, indolyl and the like. Such groups may be substituted or unsubstituted.

“Halo”, “halogen”, or “halide” is a chloro, bromo, fluoro or iodo atom radical. Bromo, chloro and fluoro are preferred halides.

Also, as referred to herein, a “lower” hydrocarbon moiety (e.g., “lower” alkyl) is a hydrocarbon chain comprised of 1 to 6, preferably from 1 to 4, carbon atoms.

A “pharmaceutically-acceptable salt” is a cationic salt formed at any acidic (e.g., carboxyl) group, or an anionic salt formed at any basic (e.g., amino) group. Many such salts are known in the art, as described in World Patent Publication 87/05297, Johnston et al., published Sep. 11, 1987 (incorporated by reference herein). Preferred cationic salts include the alkali metal salts (such as sodium and potassium), and alkaline earth metal salts (such as magnesium and calcium) and organic salts. Preferred anionic salts include the halides (such as chloride salts).

“Biohydrolyzable amides” are amides of the compounds of the invention that do not: interfere with the inhibitory activity of the compound, or that are readily converted in vivo by a mammal subject to yield an active inhibitor.

A “biohydrolyzable hydroxy imide” is an imide of a Formula (I) compound that does not interfere with the metalloprotease inhibitory activity of these compounds, or that is readily converted in vivo by a mammal subject to yield an active Formula (I) compound. Such hydroxy imides include those that do not interfere with the biological activity of the Formula (I) compounds.

A “biohydrolyzable ester” refers to an ester of a Formula (I) compound that does not interfere with the metalloprotease inhibitory activity of these compounds or that is readily converted by an animal to yield an active Formula (I) compound.

A “solvate” is a complex formed by the combination of a solute (e.g., a metalloprotease inhibitor) and a solvent (e.g., water). See J. Honig et al., The Van Nostrand Chemist's Dictionary, p. 650 (1953). Pharmaceutically-acceptable solvents used according to this invention include those that do not interfere with the biological activity of the metalloprotease inhibitor (e.g., water, ethanol, acetic acid, N,N-dimethylformamide and others known or readily determined by the skilled artisan).

“Optical isomer”, “stereoisomer”, “diastereomer” as referred to herein have the standard art recognized meanings (Cf., Hawley's Condensed Chemical Dictionary, 11th Ed.).

The illustration of specific protected forms and other derivatives of the Formula (I) compounds is not intended to be limiting. The application of other useful protecting groups, salt forms, etc. is within the ability of the skilled artisan.

As defined above and as used herein, substituent groups may themselves be substituted. Such substitution may be with one or more substituents. Such substituents include those listed in C. Hansch and A. Leo, Substituent Constants for Correlation Analysis in Chemistry and Biology (1979), incorporated by reference herein. Preferred substituents include (for example) alkyl, alkenyl, alkoxy, hydroxy, oxo, nitro, amino, aminoalkyl (e.g., aminomethyl, etc.), cyano, halo, carboxy, alkoxyaceyl (e.g., carboethoxy, etc.), thiol, aryl, cycloalkyl, heteroaryl, heterocycloalkyl (e.g., piperidinyl, morpholinyl, pyrrolidinyl, etc.). imino, thioxo, hydroxyalkyl, aryloxy, arylalkyl, and combinations thereof.

As used herein, “mammalian metalloprotease” means any metal-containing enzyme found in mammalian sources which is capable of catalyzing the breakdown of collagen, gelatin or proteoglycan under suitable assay conditions. Appropriate assay conditions can be found, for example, in U.S. Pat. No. 4,743,587, which references the procedure of Cawston. et al., Anal. Biochem. (1979) 99:340-345, use of a synthetic substrate is described by Weingarten, H., et al., Biochem. Biophy. Res. Comm. (1984) 139:1184-1187. Any standard method for analyzing the breakdown of these structural proteins can, of course, be used. The metalloprotease enzymes referred to herein are all zinc-containing proteases which are similar in structure to, for example, human stromelysin or skin fibroblast collagenase. The ability of candidate compounds to inhibit metalloprotease activity can, of course, be tested in the assays described above. Isolated metalloprotease enzymes can be used to confirm the inhibiting activity of the invention compounds, or crude extracts which contain the range of enzymes capable of tissue breakdown can be used.

Compounds:

Compounds of the invention are described in the Summary of the Invention. Preferred compounds of the invention are those in which Z is heterospiroalkylene, preferably having heteroatoms adjacent to the parent ring structure, more preferably such spiroheteroalkylenes have 4 to 5 members. Preferred heteroatoms are divalent.

The invention provides compounds which are useful as inhibitors of metalloproteases, preferably a matrix metalloproteases, and which are effective in treating conditions characterized by excess activity of these enzymes. In particular, the present invention relates to a compound having a structure according to Formula (I)

wherein

R₁ is H,

R₂ is hydrogen, alkyl, or acyl;

Ar is COR₃ or SO₂R₄; and

R₃ is alkoxy, aryloxy, heteroaryloxy, alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and alkylarylamino;

R₄ is alkyl, heteroalkyl, aryl, or heteroaryl, substituted or unsubstituted;

X is O, S, SO, SO₂, or NR₅, wherein R₅ is independently chosen from hydrogen, alkyl, heteroalkyl, heteroaryl, aryl, SO₂R₆, COR₇, CSR₈, PO(R₉) or may optionally form a ring with W or Y; and

R₆ is alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and alkylarylamino;

R₇ is hydrogen, alkoxy, aryloxy, heteroaryloxy, alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and alkylarylamino;

R₈ is alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and alkylarylamino;

R₉ is alkyl, aryl, heteroaryl, heteroalkyl;

W is hydrogen or one or more lower alkyl moieties, or is an alkylene, arylene or heteroarylene bridge between two adjacent or nonadjacent carbons (thus forming a fused ring),

Y is independently one or more of hydrogen, hydroxy, SR₁₀, SOR₄, SO₂R₄, alkoxy. amino, wherein amino is of formula NR₁₁, R₁₂, wherein R₁₁ and R₁₂ are independently chosen from hydrogen, alkyl, heteroalkyl, heteroaryl, aryl, SO₂R₆, COR₇. CSR₈, PO(Rg)₂; and

R₁₀ is hydrogen, alkyl, aryl, heteroaryl;

Z is nil, a spiro moiety or an oxo group substituted on the heterocyclic ring;

n is 1-4.

This structure also includes an optical isomer, diastereomer or enantiomer for Formula (I), or a pharmaceutically-acceptable salt, or biohydrolyzable ester, amide, or imide thereof.

Compound Preparation:

The hydroxamic compounds of Formula (I) can be prepared using a variety of procedures. General schemes include the following.

PREPARATION OF THE Y MOIETY

For the manipulation of Y it is understood that the skilled artisan may choose to prepare Y before, after or concurrent with the preparation of the heterocyclic ring. For clarity, the W and Z moiety are not shown below. More than one Y and Z may be present in the compounds of formula (I). For compounds where Y is not adjacent to the ring nitrogen, a preferred method of making the compounds is;

Where R is a derivatizable group or can be manipulated or substituted, such compounds are known or are prepared by known methods. (A) is converted to its analogous sulfanamide and R is manipulated to give (B) during this or a subsequent step. Y and Z can be added or altered, followed by appropriate reaction to provide R₁. For example, this step may include treatment with hydroxyl amine under basic conditions to give a compound of formula I (C).

For the preparation and elaboration of the heterocyclic ring it is understood that the skilled artisan may choose to prepare Y before, after or concurrent with the preparation of the heterocyclic ring. For clarity, the W, Y, and Z moiety are not shown below. More than one W, Y and Z may be present in the compounds of formula (I). For compounds where X is nitrogen, the preferred method for the manipulation of R₅ is shown. In the scheme below, L is any acceptable leaving group, and B is a blocking group as above. The skilled artisan will recognize that the choice of blocking group is within the skill of the artisan working in organic chemistry.

For compounds containing two different groups attached to the amide nitrogen the preferred method of ring formation is shown below. For the preparation and elaboration of the heterocyclic ring it is understood that the skilled artisan may choose to prepare Y before, after or concurrent with the preparation of the heterocyclic ring. For clarity, the W, Y, and Z moiety are not shown below. More than one W, Y and Z may be present in the compounds of formula (I). Amide formation with an amino alcohol will leave a free hydroxyl group which can undergo standard ring closure to provide the heterocyclic ring. Upon formation of the ring, elaboration of the invention proceeds as described above.

A convenient method of preparing compounds of the invention is via alkylation of an activated α-carbonyl carbon of a compound shown in the scheme below, under basic conditions. Preferably the alkylation occurs with an alpha halo ester, depending on desired functionality, or any compound where L represents and potential anion or a good leaving group. In this first step, it is preferred that an alpha isocyano carbonyl compound be used, as the isocyano group is readily converted to an amine under acidic conditions.

Using the amine prepared from the isocyano compound, it is preferred that the sulfanamide proceeds via a similar route as shown in Scheme I and the like.

In the scheme below. B and P represent blocking and protecting groups respectively, and L represents a leaving group. The skilled artisan will recognize these groups from standard works in the art. In addition, the skilled artisan will recognize that these groups are chosen with the reaction conditions and route in mind, hence the specific choice of group is left to the artisan, and is well within the realm of the skilled artisan's practice. For convenience, radicals W, Y, and Z are not shown, and the skilled artisan may proceed as above in preparing them.

The last step in the synthesis, closure of the ring system, proceeds as in Scheme II and/ or Scheme III, above.

An additional method of ring formation with two ring nitrogens is shown below. For the preparation and elaboration of the heterocyclic ring it is understood that the skilled artisan may choose to prepare Y before, after or concurrent with the preparation of the heterocyclic ring. For clarity, the W, Y, and Z moiety are not shown below. More than one W, Y and Z may be present in the compounds of formula (I). In the scheme below, L is any acceptable leaving group, and B is a blocking group as above, Boc is an example of a preferred, and art recognized blocking group. The skilled artisan will recognize that the choice of blocking group is within the skill of the artisan working in organic chemistry. Thus, the choice of Boc is not required, but preferred. A bifunctional moiety, for example a diamine is allowed to react with an appropriate dihalo compound as shown below. The halo moiety serves as a leaving group. Upon formation of the ring, elaboration of the invention proceeds as described above.

PREPARATION OF THE Z MOIETY

Of course the skilled artisan will recognize that schemes applicable to the preparation of Y may be useful in the preparation of Z as noted above. Other preferred methods are provided for the reader.

Where Z is a ketal or thioketal the compounds of the invention may be prepared from a compound having a carbonyl in the ring. Such compounds are prepared by known methods, and many of such compounds are known or commercially available. Thus the skilled artisan will appreciate that a hydroxy, amino, imino, alkoxy, oxo or any other group that may be manipulated into a carbonyl compound. The order of elaborating the ketal, R₁ or the sulfanamide may be changed.

A preferred method of making the spiro compounds of the invention is via a carbonyl compound, using “protecting group” technology known in the art, such as a thioketal or ketal, and the like. Ketals, acetals and the like are prepared from carbonyl compounds by methods known in the art. Such carbonyl compounds can be made of cyclic hydroxy alkylene amines via oxidation to a ketone, or of lactams, which provide for 2-amino spiro functionality.

A variety of compounds can be generated in a similar fashion, using the guidance of the scheme above.

In the above schemes, where R′ is alkoxy or alkylthio, the corresponding hydroxy or thiol compounds are derived from the final compounds by using a standard dealkylating procedure (Bhatt, et al., “Cleavage of Ethers”, Synthesis, 1983, pp. 249-281).

These steps may be varied to increase yield of desired product. The skilled artisan will also recognize the judicious choice of reactants, solvents, and temperatures is an important component in successful synthesis. While the determination of optimal conditions, etc. is routine, it will be understood that to make a variety of compounds can be generated in a similar fashion, using the guidance of the scheme above.

The starting materials used in preparing the compounds of the invention are known, made by known methods, or are commercially available as a starting material.

It is recognized that the skilled artisan in the art of organic chemistry can readily carry out standard manipulations of organic compounds without further direction; that is, it is well within the scope and practice of the skilled artisan to carry out such manipulations. These include, but are not limited to, reduction of carbonyl compounds to their corresponding alcohols, oxidations of hydroxyls and the like, acylations, aromatic substitutions, both electrophilic and nucleophilic, etherifications, esterification and saponification and the like. Examples of these manipulations are discussed in standard texts such as March, Advanced Organic Chemistry (Wiley), Carey and Sundberg, Advanced Organic Chemistry (Vol. 2) and Keeting, Heterocyclic Chemistry (all 17 volumes).

The skilled artisan will readily appreciate that certain reactions are best carried out when other functionality is masked or protected in the molecule, thus avoiding any undesirable side reactions and/or increasing the yield of the reaction. Often the skilled artisan utilizes protecting groups to accomplish such increased yields or to avoid the undesired reactions. These reactions are found in the literature and are also well within the scope of the skilled artisan. Examples of many of these manipulations can be found for example in T. Greene, Protecting Groups in Orpanic Synthesis. Of course, amino acids used as starting materials with reactive side chains are preferably blocked to prevent undesired side reactions.

The compounds of the invention may have one or more chiral centers. As a result, one may selectively prepare one optical isomer, including diastereomer and enantiomer, over another, for example by chiral starting materials, catalysts or solvents, or may prepare both stereoisomers or both optical isomers, including diastereomers and enantiomers at once (a racemic mixture). Since the compounds of the invention may exist as racemic mixtures, mixtures of optical isomers, including diastereomers and enantiomers, or stereoisomers may be separated using known methods, such as chiral salts, chiral chromatography and the like.

In addition, it is recognized that one optical isomer, including diastereomer and enantiomer, or stereoisomer may have favorable properties over the other. Thus when disclosing and claiming the invention, when one racemic mixture is disclosed, it is clearly contemplated that both optical isomers, including diastereomers and enantiomers, or stereoisomers substantially free of the other are disclosed and claimed as well.

Methods of Use

Metalloproteases (MPs) found in the body operate, in part, by breaking down the extracellular matrix, which comprises extracellular proteins and glycoproteins. These proteins and glycoproteins play an important role in maintaining the size, shape, structure and stability of tissue in the body. Inhibitors of metalloproteases are useful in treating diseases caused, at least in part, by breakdown of such proteins. It is known that MPs are intimately involved in tissue remodeling. As a result of this activity they have been said to be active in many disorders involving either the:

breakdown of tissues; including degenerative diseases, such as arthritis, multiple sclerosis and the like; metastasis or mobility of tissues in the body:

the remodeling of tissues, including fibrotic disease, scarring, benign hyperplasia, and the like.

The compounds of the present invention treat disorders, diseases and/or unwanted conditions which are characterized by unwanted or elevated activity by that class of proteases. For example the compounds can be used to inhibit proteases which

destroy structural proteins (i.e. the proteins that maintain tissue stability and structure);

interfere in inter/intracellular signaling, including those implicated in cytokine up-regulation, and/or cytokine processing and/or inflammation, tissue degradation and other maladies [Mohler K M, et al, Nature 370 (1994) 218-220, Gearing A J H, et al, Nature 370 (1994) 555-557 McGeehan G M. et al, Nature 370 (1994) 558-561], and/or

facilitate processes which are undesired in the subject being treated, for example, the processes of sperm maturation, egg fertilization and the like.

As used herein, a “MP related disorder” or “a MP related disease” is one that involves unwanted or elevated MP activity in the biological manifestation of the disease or disorder; in the biological cascade leading to the disorder, or as a symptom of the disorder. This “involvement” of the MP includes;

The unwanted or elevated MP activity as a “cause” of the disorder or biological manifestation, whether the activity was elevated genetically, by infection, by autoimmunity, trauma, biomechanical causes, lifestyle [e.g. obesity] or by some other cause;

The MP as part of the observable manifestation of the disease or disorder. That is, the disease or disorder is measurable in terms of the increased MP activity, or from a clinical standpoint, unwanted or elevated MP levels indicate the disease. MPs need not be the “hallmark” of the disease or disorder;

The unwanted or elevated MP activity is part of the biochemical or cellular cascade that results or relates to the disease or disorder. In this respect, inhibition of the MP activity interrupts the cascade, and thus controls the disease.

Advantageously, many MPs are not distributed evenly throughout the body. Thus the distribution of MPs expressed in various tissues are often specific to those tissues. For example, the distribution of metalloproteases implicated in the breakdown of tissues in the joints, is not the same as the distribution of metalloproteases found in other tissues. Thus, though not essential for activity or efficacy, certain disorders preferably are treated with compounds that act on specific MPs found in the affected tissues or regions of the body. For example, a compound which displays a higher degree of affinity and inhibition for a MP found in the joints (e.g. chondrocytes) would be preferred for treatment of disease found there than other compounds which are less specific.

In addition, certain inhibitors are more bioavailable to certain tissues than others, and this judicious choice of inhibitor, with the selectivity described above provides for specific treatment of the disorder, disease or unwanted condition. For example, compounds of this invention vary in their ability to penetrate into the central nervous system. Thus compounds may be selected to produce effects mediated through MPs found specifically outside the central nervous system.

Determination of the specificity of a MP inhibitor of a certain MP is within the skill of the artisan in that field. Appropriate assay conditions can be found in the literature. Specifically assays are known for stromelysin and collagenase. For example, U.S. Pat. No. 4.743,587 references the procedure of Cawston, et al., Anal Biochem (1979) 99:340-345. The use of a synthetic substrate in an assay is described by Weingarten, H., et al., Biochem Biophy Res Comm (1984) 139:1184-1187. Any standard method for analyzing the breakdown of structural proteins by MPs can, of course, be used. The ability of compounds of the invention to inhibit metalloprotease activity can, of course, be tested in the assays found in the literature, or variations thereof. Isolated metalloprotease enzymes can be used to confirm the inhibiting activity of the invention compounds, or crude extracts which contain the range of enzymes capable of tissue breakdown can be used.

As a result of the MP inhibitory effect of the compounds of the invention, the compounds of the invention are also useful in treating the following disorders by virtue of their metalloprotease activity.

The compounds of this invention are also useful for the prophylactic or acute treatment. They are administered in any way the skilled artisan in the fields of medicine or pharmacology would desire. It is immediately apparent to the skilled artisan that preferred routes of administration will depend upon the disease state being treated, and the dosage form chosen. Preferred routes for systemic administration include administration perorally or parenterally.

However, the skilled artisan will readily appreciate the advantage of administering the MP inhibitor directly to the affected area for many disorders. For example, it may be advantageous to administer MP inhibitors directly to the area of the disease or condition as in area affected by surgical trauma (e.g., angioplasty), area affected by scarring or bum (e.g., topical to the skin),

Because the remodeling of bone involves MPs, the compounds of the invention are useful in preventing prosthesis loosening. It is known in the art that over time prostheses loosen, become painful, and may result in further bone injury, thus demanding replacement. The need for replacement of such prostheses includes those such as in, joint replacements (for example hip, knee and shoulder replacements), dental prosthesis, including dentures, bridges and prosthesis secured to the maxilla and/or mandible.

MPs are also active in remodeling of the cardiovascular system (for example, in congestive heart failure). It has been suggested that one of the reasons angioplasty has a higher than expected long term failure rate (reclosure over time) is that MP activity is not desired or is elevated in response to what may be recognized by the body as “injury” to the basement membrane of the vessel. Thus regulation of MP activity in indications such as dilated cardiomyopathy, congestive heart failure, atherosclerosis, plaque rupture, reperfusion injury, ischemia, chronic obstructive pulmonary disease, angioplasty restenosis and aortic aneurysm may increase long term success of any other treatment, or may be a treatment in itself.

In skin care, MPs are implicated in the remodeling or “turnover” of skin. As a result, the regulation of MPs improves treatment of skin conditions including but not limited to, wrinkle repair, regulation and prevention and repair of ultraviolet induced skin damage. Such a treatment includes prophylactic treatment or treatment before the physiological manifestations are obvious. For example, the MP may be applied as a pre-exposure treatment to prevent ultraviolet, damage and/or during or after exposure to prevent or minimize post-exposure damage. In addition, MPs are implicated in skin disorders and diseases related to abnormal tissues that result from abnormal turnover, which includes metalloprotease activity, such as epidermolysis bullosa, psoriasis, scleroderma and atopic dermatitis. The compounds of the invention are also useful for treating the consequences of “normal” injury to the skin including scarring or “contraction” of tissue, for example, following bums. MP inhibition is also useful in surgical procedures involving the skin for prevention of scarring, and promotion of normal tissue growth including in such applications as limb reattachment and refractory surgery (whether by laser or incision).

In addition, MPs are related to disorders involving irregular remodeling of other tissues, such as bone, for example, in otosclerosis and/or osteoporosis, or for specific organs, such as in liver cirrhosis and fibrotic lung disease. Similarly in diseases such as multiple sclerosis, MPs may be involved in the irregular modeling of blood brain barrier and/or myelin sheaths of nervous tissue. Thus regulating MP activity may be used as a strategy in treating, preventing, and controlling such diseases.

MPs are also thought to be involved in many infections, including cytomegalovirus; [CMV) retinitis; HIV, and the resulting syndrome, AIDS.

MPs may also be involved in extra vascularization where surrounding tissue needs to be broken down to allow new blood vessels such as in angiofibroma and hemangioma.

Since MPs break down the extracellular matrix, it is contemplated that inhibitors of these enzymes can be used as birth control agents, for example in preventing ovulation, in preventing penetration of the sperm into and through the extracellular milieu of the ovum, implantation of the fertilized ovum and in preventing sperm maturation.

In addition they are also contemplated to be useful in preventing or stopping premature labor and delivery.

Since MPs are implicated in the inflammatory response, and in the processing of cytokines the compounds are also useful as anti-inflammatories, for use in disease where inflammation is prevalent including, inflammatory bowel disease, Crohn's disease, ulcerative colitis, pancreatitis, diverticulitis, asthma or related lung disease, rheumatoid arthritis, gout and Reiter's Syndrome.

Where autoimmunity is the cause of the disorder, the immune response often triggers MP and cytokine activity. Regulation of MPs in, treating such autoimmune disorders is a useful treatment strategy. Thus MP inhibitors can be used for treating disorders including, lupus erythmatosis, ankylosing spondylitis, and autoimmune keratitis. Sometimes the side effects of autoimmune therapy result in exacerbation of other conditions mediated by MPs, here MP inhibitor therapy is effective as well, for example, in autoimmune-therapy-induced fibrosis.

In addition, other fibrotic diseases lend themselves to this type of therapy, including pulmonary disease, bronchitis, emphysema, cystic fibrosis, acute respiratory distress syndrome (especially the acute phase response).

Where MPs are implicated in the undesired breakdown of tissue by exogenous agents, these can be treated with MP inhibitors. For example, they are effective as rattle snake bite antidote, as anti-vessicants, in treating allergic inflammation, septicemia and shock. In addition, they are useful as antiparasitics (e.g., in malaria) and antiinfectives. For example, they are thought to be useful in treating or preventing viral infection, including infection which would result in herpes, “cold” (e.g., rhinoviral infection), meningitis, hepatitis, HIV infection and AIDS.

MP inhibitors are also thought to be useful in treating Alzheimer's disease, amyotrophic lateral sclerosis (ALS), muscular dystrophy, complications resulting from or arising out of diabetes, especially those involving loss of tissue viability, coagulation, Graft vs. Host disease, leukemia, cachexia, anorexia, proteinuria, and perhaps regulation of hair growth.

For some diseases, conditions or disorders MP inhibition is contemplated to be a preferred method of treatment. Such diseases, conditions or disorders include, arthritis (including osteoarthritis and rheumitoid arthritis), cancer (especially the prevention or arrest of tumor growth and metastasis), ocular disorders (especially comeal ulceration, lack of corneal healing, macular degeneration, and pterygium), and gum disease (especially periodontal disease, and gingivitis)

Compounds preferred for, but not limited to, the treatment of arthritis (including osteoarthritis and rheumatoid arthritis) are those compounds that are selective for the metalloproteases and the disintegrin metalloproteases.

Compounds preferred for, but not limited to, the treatment of cancer (especially the prevention or arrest of tumor growth and metastasis) are those compounds that preferentially inhibit gelatinases or type IV collagenases.

Compounds preferred for, but not limited to, the treatment of ocular disorders (especially corneal ulceration, lack of corneal healing, macular degeneration, and pterygium) are those compounds that broadly inhibit metalloproteases. Preferably these compounds are administered topically, more preferably as a drop or gel.

Compounds preferred for, but not limited to, the treatment of gum disease (especially periodontal disease, and gingivitis) are those compounds that preferentially inhibit collagenases.

Compositions:

The compositions of the invention comprise:

(a) a safe and effective amount of a compound of Formula (I); and

(b) a pharmaceutically-acceptable carrier.

As discussed above, numerous diseases are known to be mediated by excess or undesired metalloprotease activity. These include tumor metastasis, osteoarthritis, rheumatoid arthritis, skin inflammation, ulcerations, particularly of the comea, reaction to infection, periodontitis and the like. Thus, the compounds of the invention are useful in therapy with regard to conditions involving this unwanted activity.

The invention compounds can therefore be formulated into pharmaceutical compositions for use in treatment or prophylaxis of these conditions. Standard pharmaceutical formulation techniques are used, such as those disclosed in Remington's Pharmaceutical Sciences, Mack Publishing Company, Easton, Pa., latest edition.

A “safe and effective amount” of a Formula (I) compound is an amount that is effective, to inhibit metalloproteases at the site(s) of activity, in a mammal subject, without undue adverse side effects (such as toxicity, irritation, or allergic response), commensurate with a reasonable benefit/risk ratio when used in the manner of this invention. The specific “safe and effective amount” will, obviously, vary with such factors as the particular condition being treated, the physical condition of the patient, the duration of treatment, the nature of concurrent therapy (if any), the specific dosage form to be used, the carrier employed, the solubility of the Formula (I) compound therein, and the dosage regimen desired for the composition.

In addition to the subject compound, the compositions of the subject invention contain a pharmaceutically-acceptable carrier. The term “pharmaceutically-acceptable carrier”, as used herein, means one or more compatible solid or liquid filler diluents or encapsulating substances which are suitable for administration to a mammal. The term “compatible”, as used herein, means that the components of the composition are capable of being commingled with the subject compound, and with each other, in a manner such that there is no interaction which would substantially reduce the pharmaceutical efficacy of the composition under ordinary use situations. Pharmaceutically-acceptable carriers must, of course, be of sufficiently high purity and sufficiently low toxicity to render them suitable for administration to the animal, preferably mammal being treated.

Some examples of substances which can serve as pharmaceutically-acceptable carriers or components thereof are sugars, such as lactose, glucose and sucrose; starches, such as corn starch and potato starch; cellulose and its derivatives, such as sodium carboxymethyl cellulose, ethyl cellulose, and methyl cellulose; powdered tragacanth; malt; gelatin; talc; solid lubricants, such as stearic acid and magnesium stearate; calcium sulfate; vegetable oils, such as peanut oil, cottonseed oil, sesame oil, olive oil, corn oil and oil of theobroma; polyols such as propylene glycol, glycerine, sorbitol, mannitol, and polyethylene glycol; alginic acid; emulsifiers, such as the TWEENS; wetting agents, such sodium lauryl sulfate; coloring agents; flavoring agents; tableting agents, stabilizers; antioxidants; preservatives; pyrogen-free water; isotonic saline; and phosphate buffer solutions.

The choice of a pharmaceutically-acceptable carrier to be used in conjunction with the subject compound is basically determined by the way the compound is to be administered.

If the subject compound is to be injected, the preferred pharmaceutically-acceptable carrier is sterile, physiological saline, with blood-compatible suspending agent, the pH of which has been adjusted to about 7.4.

In particular, pharmaceutically-acceptable carriers for systemic administration include sugars, starches, cellulose and its derivatives, malt, gelatin, talc, calcium sulfate, vegetable oils, synthetic oils, polyols, alginic acid, phosphate buffer solutions, emulsifiers, isotonic saline, and pyrogen-free water. Preferred carriers for parenteral administration include propylene glycol, ethyl oleate, pyrrolidone, ethanol, and sesame oil. Preferably, the pharmaceutically-acceptable carrier, in compositions for parenteral administration, comprises at least about 90% by weight of the total composition.

The compositions of this invention are preferably provided in unit dosage form. As used herein, a “unit dosage form” is a composition of this invention containing an amount of a Formula (I) compound that is suitable for administration to a animal, preferably mammal subject, in a single dose, according to good medical practice. These compositions preferably contain from about 5 mg (milligrams) to about 1000 mg, more preferably from about 10 mg to about 500 mg, more preferably from about 10 mg to about 300 mg, of a Formula (I) compound.

The compositions of this invention may be in any of a variety of forms, suitable (for example) for oral, rectal, topical, nasal, ocular or parenteral administration. Depending upon the particular route of administration desired, a variety of pharmaceutically-acceptable carriers well-known in the art may be used. These include solid or liquid fillers, diluents, hydrotropes, surface-active agents, and encapsulating substances. Optional pharmaceutically-active materials may be included, which do not substantially interfere with the inhibitory activity of the Formula (I) compound. The amount of carrier employed in conjunction with the Formula (I) compound is sufficient to provide a practical quantity of material for administration per unit dose of the Formula (I) compound. Techniques and compositions for making dosage forms useful in the methods of this invention are described in the following references, all incorporated by reference herein: Modern Pharmaceutics, Chapters 9 and 10 (Banker & Rhodes, editors, 1979); Lieberman et al., Pharmaceutical Dosage Forms: Tablets (1981); and Ansel, Introduction to Pharmaceutical Dosage Forms 2d Edition (1976).

In addition to the subject compound, the compositions of the subject invention contain a pharmaceutically-acceptable carrier. The term “pharmaceutically-acceptable carrier”, as used herein, means one or more compatible solid or liquid filler diluents or encapsulating substances which are suitable for administration to a animal, preferably mammal. The term “compatible”, as used herein. means that the components of the composition are capable of being commingled with the subject compound, and with each other, in a manner such that there is no interaction which would substantially reduce the pharmaceutical efficacy of the composition under ordinary use situations. Pharmaceutically-acceptable carriers must, of course, be of sufficiently high purity and sufficiently low toxicity to render them suitable for administration to the animal, preferably mammal being treated.

Some examples of substances which can serve as pharmaceutically-acceptable carriers or components thereof are sugars, such as lactose, glucose and sucrose; starches, such as corn starch and potato starch; cellulose and its derivatives, such as sodium carboxymethyl cellulose, ethyl cellulose, and methyl cellulose; powdered tragacanth; malt; gelatin; talc; solid lubricants, such as stearic acid and magnesium stearate; calcium sulfate; vegetable oils, such as peanut oil, cottonseed oil, sesame oil, olive oil, corn oil and oil of theobroma; polyols such as propylene glycol, glycerine, sorbitol, mannitol, and polyethylene glycol; alginic acid; emulsifiers, such as the TWEENS; wetting agents, such sodium lauryl sulfate; coloring agents; flavoring agents; tableting agents, stabilizers; antioxidants; preservatives; pyrogen-free water; isotonic saline; and phosphate buffer solutions.

The choice of a pharmaceutically-acceptable carrier to be used in conjunction with the subject compound is basically determined by the way the compound is to be administered.

If the subject compound is to be injected, the preferred pharmaceutically-acceptable carrier is sterile, physiological saline, with blood-compatible suspending agent, the pH of which has been adjusted to about 7.4.

Various oral dosage forms can be used, including such solid forms as tablets, capsules. granules and bulk powders. These oral forms comprise a safe and effective amount, usually at least about 5%, and preferably from about 25% to about 50%, of the Formula (I) compound. Tablets can be compressed, tablet triturates, enteric-coated, sugar-coated, film-coated, or multiple-compressed, containing suitable binders, lubricants, diluents, disintegrating agents, coloring agents, flavoring agents, flow-inducing agents, and melting agents. Liquid oral dosage forms include aqueous solutions, emulsions, suspensions, solutions and/or suspensions reconstituted from non-effervescent granules, and effervescent preparations reconstituted from effervescent granules, containing suitable solvents, preservatives, emulsifying agents, suspending agents, diluents, sweeteners, melting agents, coloring agents and flavoring agents.

The pharmaceutically-acceptable carrier suitable for the preparation of unit dosage forms for peroral administration are well-known in the art. Tablets typically comprise conventional pharmaceutically-compatible adjuvants as inert diluents, such as calcium carbonate, sodium carbonate, mannitol, lactose and cellulose; binders such as starch, gelatin and sucrose, disintegrants such as starch, alginic acid and croscarmelose; lubricants such as magnesium stearate, stearic acid and talc. Glidants such as silicon dioxide can be used to improve flow characteristics of the powder mixture. Coloring agents, such as the FD&C dyes, can be added for appearance. Sweeteners and flavoring agents, such as aspartame, saccharin, menthol, peppermint, and fruit flavors, are useful adjuvants for chewable tablets. Capsules typically comprise one or more solid diluents disclosed above. The selection of carrier components depends on secondary considerations like taste, cost, and shelf stability, which are not critical for the purposes of the subject invention, and can be readily made by a person skilled in the art.

Peroral compositions also include liquid solutions, emulsions, suspensions, and the like. The pharmaceutically-acceptable carriers suitable for preparation of such compositions are well known in the art. Typical components of carriers for syrups, elixirs, emulsions and suspensions include ethanol, glycerol, propylene glycol, polyethylene glycol, liquid sucrose, sorbitol and water. For a suspension, typical suspending agents include methyl cellulose, sodium carboxymethyl cellulose, AVICEL RC-591, tragacanth and sodium alginate; typical wetting agents include lecithin and polysorbate 80; and typical preservatives include methyl paraben and sodium benzoate. Peroral liquid compositions may also contain one or more components such as sweeteners, flavoring agents and colorants disclosed above.

Such compositions may also be coated by conventional methods, typically with pH or time-dependent coatings, such that the subject compound is released in the gastrointestinal tract in the vicinity of the desired topical application, or at various times to extend the desired action. Such dosage forms typically include, but are not limited to, one or more of cellulose acetate phthalate, polyvinylacetate phthalate, hydroxypropyl methyl cellulose phthalate, ethyl cellulose, Eudragit coatings, waxes and shellac.

Compositions of the subject invention may optionally include other drug actives.

Other compositions useful for attaining systemic delivery of the subject compounds include sublingual, buccal and nasal dosage forms. Such compositions typically comprise one or more of soluble filler substances such as sucrose, sorbitol and mannitol; and binders such as acacia, microcrystalline cellulose, carboxymethyl cellulose and hydroxypropyl methyl cellulose. Glidants, lubricants, sweeteners, colorants, antioxidants and flavoring agents disclosed above may also be included.

The compositions of this invention can also be administered topically to a subject, e.g., by the direct laying on or spreading of the composition on the epidermal or epithelial tissue of the subject, or transdermally via a “patch”. Such compositions include, for example, lotions, creams, solutions, gels and solids. These topical compositions preferably comprise a safe and effective amount, usually at least about 0.1%, and preferably from about 1% to about 5%, of the Formula (I) compound. Suitable carriers for topical administration preferably remain in place on the skin as a continuous film, and resist being removed by perspiration or immersion in water. Generally, the carrier is organic in nature and capable of having dispersed or dissolved therein the Formula (I) compound. The carrier may include pharmaceutically-acceptable emolients, emulsifiers, thickening agents, solvents and the like.

Methods of Administration:

This invention also provides methods of treating or preventing disorders associated with excess or undesired metalloprotease activity in an animal, preferably mammal subject, by administering a safe and effective amount of a Formula (I) compound to said subject. As used herein, a “disorder associated with excess or undesired metalloprotease activity” is any disorder characterized by degradation of proteins. The methods of the invention are useful in treating disorders such as (for example) osteoarthritis, periodontitis, corneal ulceration, tumor invasion, and rheumatoid arthritis.

The Formula (I) compounds and compositions of this invention can be administered topically or systemically. Systemic application includes any method of introducing Formula (I) compound into the tissues of the body, e.g., intra-articular (especially in treatment of rheumatoid arthritis), intrathecal, epidural, intramuscular, transdermal, intravenous, intraperitoneal, subcutaneous, sublingual, rectal, and oral administration. The Formula (I) compounds of the present invention are preferably administered orally.

The specific dosage of inhibitor to be administered, as well as the duration of treatment, and whether the treatment is topical or systemic are interdependent. The dosage and treatment regimen will also depend upon such factors as the specific Formula (I) compound used, the treatment indication, the ability of the Formula (I) compound to reach minimum inhibitory concentrations at the site of the metalloprotease to be inhibited, the personal attributes of the subject (such as weight), compliance with the treatment regimen, and the presence and severity of any side effects of the treatment.

Typically, for a human adult (weighing approximately 70 kilograms), from about 5 mg to about 3000 mg, more preferably from about 5 mg to about 1000 mg, more preferably from about 10 mg to about 100 mg, of Formula (I) compound are administered per day for systemic administration. It is understood that these dosage ranges are by way of example only, and that daily administration can be adjusted depending on the factors listed above.

A preferred method of administration for treatment of rheumatoid arthritis is oral or parenterally via intra-articular injection. As is known and practiced in the art, all formulations for parenteral administration must be sterile. For mammals, especially humans, (assuming an approximate body weight of 70 kilograms) individual doses of from about 10 mg to about 1000 mg are preferred.

A preferred method of systemic administration is oral. Individual doses of from about 10 mg to about 1000 mg, preferably from about 10 mg to about 300 mg are preferred.

Topical administration can be used to deliver the Formula (I) compound systemically, or to treat a subject locally. The amounts of Formula (I) compound to be topically administered depends upon such factors as skin sensitivity, type and location of the tissue to be treated, the composition and carrier (if any) to be administered, the particular Formula (I) compound to be administered, as well as the particular disorder to be treated and the extent to which systemic (as distinguished from local) effects are desired.

The inhibitors of the invention can be targeted to specific locations where the metalloprotease is accumulated by using targeting ligands. For example, to focus the inhibitors to metalloprotease contained in a tumor, the inhibitor is conjugated to an antibody or fragment thereof which is immunoreactive with a tumor marker as is generally understood in the preparation of immunotoxins in general. The targeting ligand can also be a ligand suitable for a receptor which is present on the tumor. Any targeting ligand which specifically reacts with a marker for the intended target tissue can be used. Methods for coupling the invention compound to the targeting ligand are well known and are similar to those described below for coupling to carrier. The conjugates are formulated and administered as described above.

For localized conditions, topical administration is preferred. For example, to treat ulcerated cornea, direct application to the affected eye may employ a formulation as eyedrops or aerosol. For corneal treatment, the compounds of the invention can also be formulated as gels, drops or ointments, or can be incorporated into collagen or a hydrophilic polymer shield. The materials can also be inserted as a contact lens or reservoir or as a subconjunctival formulation. For treatment of skin inflammation, the compound is applied locally and topically, in a gel, paste, salve or ointment. The mode of treatment thus reflects the nature of the condition and suitable formulations for any selected route are available in the art.

In all of the foregoing, of course, the compounds of the invention can be administered alone or as mixtures, and the compositions may further include additional drugs or excipients as appropriate for the indication.

Some of the compounds of the invention also inhibit bacterial metalloproteases although generally at a lower level than that exhibited with respect to mammalian metalloproteases. Some bacterial metalloproteases seem to be less dependent on the stereochemistry of the inhibitor, whereas substantial differences are found between diastereomers in their ability to inactivate the mammalian proteases. Thus, this pattern of activity can be used to distinguish between the mammalian and bacterial enzymes.

Preparation and Use of Antibodies:

The invention compounds can also be utilized in immunization protocols to obtain antisera immunospecific for the invention compounds. As the invention compounds are relatively small, they are advantageously coupled to antigenically neutral carriers such as the conventionally used keyhole limpet hemocyanin (KLH) or serum albumin carriers. For those invention compounds having a carboxyl functionality, coupling to carrier can be done by methods generally known in the art. For example, the carboxyl residue can be reduced to an aldehyde and coupled to carrier through reaction with sidechain amino groups in protein-based carriers, optionally followed by reduction of imino linkage formed. The carboxyl residue can also be reacted with sidechain amino groups using condensing agents such as dicyclohexyl carbodiimide or other carbodiimide dehydrating agents.

Linker compounds can also be used to effect the coupling; both homobifunctional and heterobifunctional linkers are available from Pierce Chemical Company, Rockford, Ill. The resulting immunogenic complex can then be injected into suitable mammalian subjects such as mice, rabbits, and the like. Suitable protocols involve repeated injection of the immunogen in the presence of adjuvants according to a schedule which boosts production of antibodies in the serum. The titers of the immune serum can readily be measured using immunoassay procedures, now standard in the art, employing the invention compounds as antigens.

The antisera obtained can be used directly or monoclonal antibodies may be obtained by harvesting the peripheral blood lymphocytes or the spleen of the immunized animal and immortalizing the antibody-producing cells, followed by identifying the suitable antibody producers using standard immunoassay techniques.

The polyclonal or monoclonal preparations are then useful in monitoring therapy or prophylaxis regimens involving the compounds of the invention. Suitable samples such as those derived from blood, serum, urine, or saliva can be tested for the presence of the administered inhibitor at various times during the treatment protocol using standard immunoassay techniques which employ the antibody preparations of the invention.

The invention compounds can also be coupled to labels such as scintigraphic labels, e.g., technetium 99 or I-131, using standard coupling methods. The labeled compounds are administered to subjects to determine the locations of excess amounts of one or more metalloproteases in vivo. The ability of the, inhibitors to selectively bind metalloprotease is thus taken advantage of to map the distribution of these enzymes in situ. The techniques can also be employed in histological procedures and the labeled invention compounds can be used in competitive immunoassays.

The following non-limiting examples illustrate the compounds, compositions, and uses of the present invention.

EXAMPLES

Compounds are analyzed using ¹H and ¹³C NMR, Elemental analysis, mass spectra and/or IR spectra, as appropriate.

Typically inert solvents are used, preferably in dried form. For example, tetrahydrofuran (THF) is distilled from sodium and benzophenone, diisopropylamine is distilled from calcium hydride and all other solvents are purchased as the appropriate grade. Chromatography is performed on silica gel (70-230 mesh; Aldrich) or (230-400 mesh; Merck) as appropriate. Thin layer chromatography analysis (TLC) is performed on glass mounted silica gel plates (200-300 mesh; Baker) and visualized with UV or 5% phosphomolybdic acid in EtOH.

Example 1 Synthesis of N-hydroxy 1-Benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxamide (1f)

α-Benzyl N-](4-methoxyphenyl)sulfonyl]-Daspartate (1a):

α-Benzyl D-aspartate (10.48 g, 47.0 mmol) is suspended in 1:1 p-dioxane:water (600 mL) and is cooled to 0° C. with an ice bath. To this is added 4-methylmorpholine (12.9 mL, 117.4 mmol) and 4-methoxybenzenesulfonyl chloride (10.67 g, 51.7 mmol) and the reaction is stirred for 1 hour at room temperature. The pH of the mixture is adjusted to 6 with 1M aqueous hydrochloric acid and then water (300 mL) is added. The product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (2×), dried (Na₂SO₄), and concentrated under reduced pressure to give a-benzyl N-[(4-methoxyphenyl)sulfonyl]-D-aspartate as an oil.

N-Benzyl-2(R)-[(4-methoxyphenyl)sulfonylamino]-succinamic Acid Benzyl Ester (1b):

α-Benzyl N-[(4-methoxyphenyl)sulfonyl]-D-aspartate (1.92 g, 4.9 mmol) is dissolved in N,N-dimethylformamide (250 mL) and is cooled to 0° C. To this is added 1-hydroxybenzotriazole (1.98 g, 14.6 mmol), 4-methylmorpholine (1.6 mL, 14.6 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (1.12 g, 5.86 mmol) followed, after 20 minutes, with benzylamine (0.59 mL, 5.4 mmol). The reaction is stirred for 16 hours at room temperature, water (400 mL) is added and the product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (3×), dried (Na₂SO₄) and concentrated under reduced pressure to give N-benzyl-2(R)-[(4-methoxyphenyl)sulfonylamino]-succinamic acid benzyl ester as an oil.

Benzyl 1-Benzyl-3-[(4methoxyphenyl)sulfonyl]-6oxo-hexahydro-pyrimidine4(R)carboxylate (1c):

To the solution of N-benzyl-2(R)-[(4-methoxyphenyl)sulfonylamino]-succinamic acid benzyl ester as an oil (2.10 g, 4.4 mmol) in 200 mL of dichloromethane is added, with stirring, 1.3,5-trioxane (1.57 g, 17.4 mmol) followed by two drops of sulfuric acid. The reaction is heated at reflux for 3 hours at which time mass spectrometry (ES) indicates the reaction to be complete. The reaction is allowed to cool to room temperature, diluted with dichloromethane (250 mL), and washed with water (2×). The product is purified by flash silica gel chromatography (1:1 hexanes-ethyl acetate), to give benzyl 1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxylate.

1-Benzyl-3-[(methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine4(R)-carboxylic Acid (1d):

A mixture of benzyl 1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxylate (518 mg, 1.0 mmol) and 10% Pd/C (50 mg) in methanol (25 mL) hydrogen atmosphere for 45 minutes. The mixture is filtered over celite and the filtrate is collected and concentrated under reduced pressure to give 1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxylic acid as a glassy solid.

N-Benzyloxy 1-benzyl-3-[(4methoxyphenyl)sulfonyl]-6oxo-hexahydro-pyrimidine-4(R)-carboxamide (1e):

1-Benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxylic acid (206 mg, 0.5 mmol) is dissolved in N,N-dimethylformamide (20 mL) and is cooled to 0° C. To this is added 1-hydroxybenzotriazole (203 mg, 1.5 mmol), 4-methylmorpholine (0.16 mL, 1.5 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (117 mg, 0.61 mmol) followed, after 20 minutes, with O-benzylhydroxylamine hydrochloride (89 mg, 0.56 mmol). The reaction is stirred for 4 hours at room temperature, water (50 mL) is added and the product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (2×), dried (Na₂SO₄) and concentrated under reduced pressure to give N-benzyloxy 1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxamide.

N-Hydroxy 1-Benzyl-3-[(4-Methoxyphenyl)sulfonyl]-6oxo-hexahydro-pyrimidine-4(R)-carboxamide (1f):

A mixture of N-benzyloxy 1-benzyl-3-[(4-Methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)carboxamide (213 mg, 0.4 mmol) and 10% Pd/C (50 mg) in methanol (25 mL) is stirred under hydrogen atmosphere for 3 hours. The mixture is filtered over celite and the filtrate is collected and concentrated under reduced pressure to give an oil. The crude product is purified by flash silica gel chromatography (200:1 ethyl acetate-formic acid) to give N-hydroxy 1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)carboxamide as a white solid. MS (ESI): 420 (M+H⁺), 437 (M+NH₄ ⁺).

Example 2

The following compounds are prepared similarly to Example 1:

N-Hydroxy 1-methyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 344 (M+H⁺), 361 (M+NH₄ ⁺);

N-Hydroxy 1-(1-methylethyl)-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 372 (M+H⁺), 389 (M+NH₄ ⁺);

N-Hydroxy 1-(1,1-dimethylethyl)-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 386 (M+H⁺), 403 (M+NH₄ ⁺);

N-Hydroxy 1-(2-methoxyethyl)-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 388 (M+H⁺), 405 (M+NH₄ ⁺);

N-Hydroxy 1-cyclohexyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 412 (M+H⁺), 429 (M+NH₄ ⁺).

Example 3 Synthesis of N-hydroxy 1-benzyl-5,5dimethyl-3-[(4-methoxyphenyl)sulfonyl]-oxo-hexahydro-pyrimidine-4(R,S)-carboxamide (3e)

3-Isocyano2,2-dimethyl-succinic Acid 1-Allyl Ester 4Ethyl Ester (3a):

Ethyl isocyanoacetate (2.19 g, 19.4 mmol) and allyl 2-bromo-2-methylpropionate (4.40 g, 21.3 mmol) are dissolved in diethyl ether (50 mL) and methyl sulfoxide (50 mL) with stirring. In a separate flask sodium hydride (775 mg of 60% dispersion in mineral oil) is rinsed with hexane and suspended in diethyl ether (10 mL). The suspension is added dropwise to the stirring solution and an additional methyl sulfoxide (50 mL) is added to the mixture. The reaction is stirred for 2 hours at room temperature. The mixture is diluted with diethyl ether (250 mL) and washed several times with water. The organic phase is dried over sodium sulfate and evaporated to give 3-isocyano-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester.

3-Amino-2,2-dimethyl-succinic Acid 1-Allyl Ester 4-Ethyl Ester (3b):

3-Isocyano-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester (3.75 g, 15.5 mmol) is dissolved in methanol the mixture is cooled to 0° C. with an ice bath. To this is added, dropwise, 37% aqueous hydrochloric acid (1.58 g). The reaction is stirred 20 minutes and neutralized with 1 M aqueous sodium hydroxide. The volatiles are removed under vacuum and then the product is extracted into ethyl acetate (2×) and washed with water (2×). The combined organic phases are dried over sodium sulfate and evaporated to give 3-amino-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester as a yellow oil.

3-[(4-Methoxyphenyl)sulfonylmino]-2,2-dimethyl-succinic Acid 1-Allyl Ester 4-Ethyl Ester (3c):

3-Amino-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester (2.10 g, 9.2 mmol) is dissolved in 1:1 p-dioxane:water solution (250 mL) and cooled to 0° C. with an ice bath. To this solution is added 4-methylmorpholine (2 mL, 18.2 mmol) followed by 4-methoxybenzenesulfonyl chloride (1.90 g, 9.2 mmol). The reaction is stirred at room temperature for 30 minutes. The mixture is diluted with water (200 mL) and the product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (3×), dried over sodium sulfate, and evaporated to give the 3-[(4-methoxyphenyl)sulfonylmino]-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester.

3-[(4-Methoxyphenyl)sulfonymino]-2,2-dimethyl-succinic Acid 4-Ethyl Ester (3d):

To the solution of 3-[(4-methoxyphenyl)sulfonylmino]-2,2-dimethyl-succinic acid 1-allyl ester 4-ethyl ester (1.50 g, 3.8 mmol) in dichloromethane (150 mL) is added tetrakis(triphenylphosphine)palladium(0) (109 mg (0.09 mmol), triphenylphosphine (61 mg, 0.23 mmol), and pyrrolidine (0.47 mL, 5.6 mmol). The reaction is stirred for 15 minutes, 1 M aqueous hydrochloric acid (200 mL) is then added and the product is extracted into dichloromethane (3×). The combined organic phases are washed with water (1x) dried over sodium sulfate and evaporated to give 3-[(4-methoxyphenyl)sulfonylmino]-2,2-dimethyl-succinic acid 4-ethyl ester as a brown oil.

N-Hydroxy 1-Benzyl-5,5-dimethyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R,S)-carboxamide (3e).

Following example 1 and using sodium hydroxide-methanol to hydrolize ethyl ester in place of the hydrogenolytic removal of the benzyl ester to make 1d, 3-[(4-methoxyphenyl)sulfonylmino]-2.2-dimethyl-succinic acid 4-ethyl ester is converted to N-hydroxy 1-benzyl-5,5-dimethyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R,S)-carboxamide as a white solid. MS (ESI): 448 [M+H]⁺, 465 (M+NH₄ ⁺).

Example 4 Synthesis of N-Hydroxy 1-(1-Methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-1,4-diazepine-5(R)-carboxamide (4e).

α-Benzyl N-(4-methoxyphenyl)suffonyl-D-aspartate (4a):

α-Benzyl D-aspartate (10.48 g, 47.0 mmol) is suspended in 1:1 p-dioxane:water (600 mL) and is cooled to 0° C. with an ice bath. To this is added 4-methymrnorpholine (12.9 mL, 117.4 mmol) and 4-methoxybenzenesulfonyl chloride (10.67 g, 51.7 mmol) and the reaction is stirred for 1 hour at room temperature. The pH of the mixture is adjusted to 6 with 1M aqueous hydrochloric acid and then water (300 mL) is added. The product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (2×), dried (Na₂SO₄), and concentrated under reduced pressure to give α-benzyl N-(4-methoxyphenyl)sulfonyl-D-aspartate as an oil.

N-(2-Hydroxyethyl)-N-(1-methylethyl)-2(R)-[(4-methoxyphenyl)sulfonylamino]-succinamic Acid Benzyl Ester (4b):

α-Benzyl N-(4-methoxyphenyl)sulfonyl-D-aspartate (1.04 g, 2.6 mmol) is dissolved in N,N-dimethylfortnamide (75 mL) and is cooled to 0° C. To this is added 1-hydroxybenzotriazole (1.07, 7.9 mmol), 4-methylmorpholine (0.87 mL, 7.9 mmol) and 1-ethyl-3-(3dimethylaminopropyl) carbodiimide (0.55 g, 2.9 mmol) followed, after 10 minutes, with 2(isopropylamino)ethanol (0.33 mL, 2.9 mmol). The reaction is stirred for 60 hours at room temperature, water (150 mL) is added and the product is extracted with ethyl acetate (3×). The combined organic phases are washed with water (3×), dried (Na₂SO₄) and concentrated under reduced pressure to give N-(2-hydroxyethyl)-N-(1-methylethyl) 2-[(4-methoxyphenyl)sulfonylamino]-succinamic acid benzyl ester as an oil.

Benzyl 1-(1-methylethyl)-4-[(4methoxyphenyl)sulfonylamino]-7-oxo-1,4-diazepine-5(R)-carboxylate (4c):

To the solution of N-(2-hydroxyethyl)-N-(1-methylethyl) 2-[(4-methoxyphenyl)sulfonylamino]-succinamnic acid benzyl ester (500 mg, 1.0 mmol) in tetrahydrofuran (10 mL) is added, with stirring, triphenylphosphine (328 g, 1.3 mmol) followed by diethyl azodicarboxylate (0.18 mL, 1.2 mmol). The reaction is stirred for 16 hours at room temperature and concentrated under reduced pressure. The product is purified by flash silica gel chromatography to give benzyl 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-1,4-diazepine-5(R)-carboxylate.

1-(1-Methylethyl)-4-[(4-methoxyphenyl)sulfonylanmino]-7-oxo-1,4diazepine-5(R)-carboxylic Acid (4d):

A mixture of benzyl 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-1,4-diazepine-5(R)-carboxylate (253 mg, 0.6 mmol) and 10% Pd/C (40 mg) in methanol (10 mL) stirred under hydrogen atmosphere for 45 minutes. The mixture is filtered over celite and the filtrate is collected and concentrated under reduced pressure to give 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-1,4-diazepine-5(R)carboxylic acid as a glassy solid.

N-Hydroxy 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-1,4diazepine5(R)-carboxamide (4e):

1-(1-Methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo-5(R)-carboxylic acid (95 mg, 0.26 mmol) is dissolved in dichloromethane and cooled to 0° C. Oxalyl chloride (46 mL, 0.53 mmol) is added, followed by N,N-dimethylfornamide (20 mL, 0.26 mmol) and the reaction is stirred for 30 minutes at room temperature. Aside, hydroxylamine hydrochloride (71 mg, 1.0 mmol) is dissolved in water (1 mL) and tetrahydrofuran (3 mL), the solution is cooled to 0° C. and triethylamine (0.21 mL, 1.5 mmol) is added. The prepared acid chloride mixture is added dropwise. The reaction mixture is stirred for 4 hours, water is added, and then the product is extracted into dichloromethane (3×). The combined organic phases are washed with water (50 mL, 2×), dried (Na₂SO₄), and evaporated under reduced pressure to give the crude product. The hydroxamic acid is purified by flash silica gel chromatography (ethyl acetate) to give N-hydroxy 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonylamino]-7-oxo- 1,4-diazepine-5(R)-carboxamide. MS (ESI): 386 (M+H⁺), 403 (M+NH₄ ⁺).

Example 5

The following compounds are prepared similarly to Example 4:

N-hydroxy 1-(1-phenylmethyl)-4-[(4-methoxyphenyl)sulfonylarnino]-7-oxo-1,4-diazepine-5(R)-carboxamide. MS (ESI): 434 (M+H⁺), 451 (M+NH₄ ⁺);

N-Hydroxy 1-(1-methylethyl)-4-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-2(R)-carboxamide. MS (ESI): 372 (M+H⁺), 389 (M+NH₄ ⁺);

N-hydroxy 2-oxo-5-[(4-methoxyphenyl)sulfonyl]-1,5-diaza[5.3.0]^(1,7)bicyclodecane-4-carboxamide. MS (ESI): 384 (M+H⁺), 401 (M+NH₄ ⁺);

Example 6 Synthesis of N-Hydroxy-1,5-di-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxamide

t-Butyl 1,5-bis(Phenylmethyl)-diazepine-2-carboxylate (6a):

The N,N′-dibenzylethethylenediamine (20.0 g, 83.2 mmol) triethylamine (25.3 g, 250 mmol, 3 equiv) and tbutyl 1,3-dibromobutyrate (25.1 g, 83.2 mmol) are heated in benzene (150 mL) to reflux for 12 h. The resulting mixture is cooled to room temperature and the solution is washed with saturated sodium bicarbonate solution. The product is purified on a silica gel column using 85/15 hexane/ethyl acetate as the eluent to afford the desired product as a yellow oil.

t-Butyl 1,5-Diazepine-2-carboxylate (6b):

The t-butyl 1,5-bis(phenylmethyl)diazepine-2-carboxylate (4.6 g, 12.1 mmol) in ethanol was placed in a Parr bottle and 10% Pd/C (1.0 g) was added. The resulting mixture was placed under 50 psi hydrogen and shaken for 24 hours. The hydrogen was removed and the solution was filtered through celite. The solvent was removed to leave a pale yellow oil which was used without further purification. MS (CI): 201 (M+H⁺).

t-Butyl 1,5-di-[(4-Methoxyphenyl)sulfonyl]-diazepine-2-carboxylate (6c):

The t-butyl 1,5-diazepine-2-carboxylate (1.15 g, 5.74 mmol) in p-dioxane (30 mL) and water (30 mL) is stirred at room temperature and then triethyl amine (2.32 g, 22.9 mmol) and 4-methoxyphenylsulfonyl chloride (2.61 g, 12.6 mmol) are added, and the reaction is stirred overnight. The resulting solution is acidified to pH˜1 with 1N HCl, poured into water and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated under reduced pressure to an oil. The oil is purified on a silica gel column using 7/3 hexane ethyl acetate as the eluent to afford the desired product as a pale yellow oil. MS (CI): 541 (M+H⁺), 558 (M+NH₄ ⁺).

1,5-Di-[(4-Methoxyphenyl)sulfonyl]-diazepine-2-carboxylic acid (6d):

The t-butyl 1,5-di-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxylate (0.45 g, 0.8 mmol) is dissolved in chloride (1.5 mL) and cooled down in an ice bath. Trifluoroacetic acid (1.5 mL, 19.0 mmol is added and the resulting solution is stirred at 0° C. for 3 hours. The reaction mixture is warmed to room temperature and an additional 1 mL of trifluroacetic acid is added. The resulting solution is stirred for an additional hour and the mixture is concentrated under reduced pressure. The residue is carried forward without further purification. MS (ESI): 485 (M+H⁺), 502 (M+NH₄ ⁺).

N-Hydroxy-1,5-di-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxamide (6e):

The 1,5-di-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxylic acid (0.60 g, 1.24 mmol) is dissolved in methylene chloride (15 mL) at room temperature followed the addition of oxalyl chloride (0.32 mL, 2.54 mmol) and slow addition of DMF (0.09 g, 1.24 mmol). This solution is stirred for 30 minutes at room temperature. In a separate flask, hydroxylamine hydrochloride (0.34 g, 5.0 mmol) in water (5 mL) and THF (7 mL) is stirred at 0° C., and then triethylamnine (1.0 mL, 6 equiv) is added. This solution is stirred for 15 minutes. The acid chloride solution is added to the hydroxylamine solution at 0° C. and then warmed up to room temperature and stirred for 3 hours. The solution is acidified to pH˜1 with 1N HCl, poured into water and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated down to an oil. The oil is purified by HPLC with a reverse phase column using 65% (95% water, 5% acetonitrile, 0.1% formic acid) and 35% (80% acetonitrile, 20% water) as the eluent. MS (ESI): 500 (M+H⁺), 517 (M+NH₄ ⁺).

Example 7 Synthesis of N-Hydroxy-1-[(4-methoxyphenyl)sulfonyl]-5(1-methyl-1H-imidazole-4sulfonyl)-diazepine-2-carboxamide

t-Butyl 1-[(4-Methoxyphenyl)sulfonyl]-5(t-butoxycarbonyl)diazepine-2-carboxylate (7a):

The t-butyl 1,5-diazepine-2-carboxylate (2.0 g, 9.98 mmol) in p-dioxane (100 mL) and water (100 mL) is stirred at room temperature and then aqueous sodium hydroxide (0.399 g, 50% w/w, 9.98 mmol) is slowly added. Next, the di-tert-butyl dicarbonate (2.18 g, 9.98 mmol) is added and the reaction mixture is stirred overnight. To the stirring solution triethyl amine (4.17 mL. 29.9 mmol), 4-dimethylaminopyridine (0.1 equiv) and 4-methoxybenzenesulfonyl chloride (2.47 g. 12.0 mmol) are added, and the reaction is stirred overnight. The resulting mixture is acidified to pH˜1 with 1N HCl, poured into water, and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated under reduced pressure to an oil. The oil is purified on a silica gel column using 5/1 hexane ethyl acetate as the eluent to afford the desired product as a solid.

1-[(4-Methoxyphenyl)sulfonyl]-diazepine-2-carboxylic Acid (7b):

The t-butyl 1-[(4-methoxyphenyl)sulfonyl]-5-(t-butoxycarbonyl)-diazepine-2-carboxylate (0.45 g, 0.95 mmol) dissolved in methylene chloride (1.5 mL) and cooled to 0° C. in an ice bath. Trifluroacetic acid (1.5 mL, 19.0 mmol) was added and the resulting mixture was stirred at 0° C. for 3 hours. The reaction mixture is warmed to room temperature and 1 mL of TFA is added. The reaction mixture is again stirred for an additional hour and the mixture is then concentrated down in vacuo. The residue is carried forward without further purification. The product is obtained as a TFA salt.

1-[(4-Metboxyphenyl)sulfonyl]-5(1-methyl-1H-imidazole4sulfonyl)diazepine-2-carboxylic Acid (7c):

The 1-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxylic acid (0.150 g, 0.48 mmol) is dissolved in water (10 mL) and p-dioxane (10 mL). The triethyl amine (0.27 mL, 1.9 mmol) and 1-methyl-1H-imidazole-4-sulfonyl chloride (0.104 g, 0.58 mmol) are next added. The reaction mixture is stirred overnight at room temperature and then the solution is acidified with 1N HCl to pH˜1, poured into water, and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated down to an oil. The oil is purified by HPLC with a reverse phase column using 70% (95% water, 5% acetonitrile, 0.1% formic acid) and 30% (80% acetonitrile, 20% water) as the eluent.

N-Hydroxy-1-[(4Methoxyphenyl)sulfonyl]-5(1-methyl-1H-imidazole- sulfonyl)diazepine-2-carboxamide (7d):

The 1-[(4-methoxyphenyl)sulfonyl]-5-(1-methyl-1H-imidazole4-sulfonyl) diazepine-2-carboxylic acid (0.35 g, 0.76 mmol) is dissolved in methylene chloride (10 mL) at room temperature followed the addition of oxalyl chloride (0.14 mL, 1.56 mmol) and the slow addition of DMF (0.058 mL, 0.76 mmol). This mixture is stirred for 30 minutes at room temperature. In a separate flask, hydroxylamine hydrochloride (0.21 g, 1.56 mmol) in water (2 mL) and THF (5 mL) are stirred at 0° C. and then triethylamine (0.634 mL, 4.56 mmol) is added. This mixture is stirred for 15 minutes. The acid chloride solution is added to the hydroxyl amine solution at 0° C. and the resulting solution is warmed to room temperature and stirred for 3 hours. The solution is acidified to pH˜1 with 1N HCl, poured into water, and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated down to an oil. The oil is purified by HPLC with a reverse phase column using 80% (95% water, 5% acetonitrile, 0.1% formic acid) and 20% (80% acetonitrile, 20% water) as the eluent.

Example 8 Synthesis of N-Hydroxy-1-[(4-methoxyphenyl)sulfonyl]-5-benzyloxycarbonyl-diazepine-2-carboxamide.

1-[(4-Methoxyphenyl)sulfonyl]-5-benzyloxycarbonyl-diazepine-2-carboxylic Acid (8a):

The 1-[(4-methoxyphenyl)sulfonyl]-diazepine-2-carboxylic acid (0.570 g, 1.33 mmol) is dissolved in water (5 mL) and p-dioxane (10 mL). Triethyl amine (0.74 mL, 5.32 mmol) and benzyl chloroformate (0.228 mL, 1.59 mmol) are next added. The reaction mixture is stirred overnight at room temperature, and then the solution is acidified with 1N HCl to pH˜1 and poured into water and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated down to an oil. The oil is purified by HPLC with a reverse phase column using 70% (95% water, 5% acetonitrile, 0.1% formic acid) and 30% (80% acetonitrile, 20% water) as the eluent.

N-Hydroxy-1-[(4metboxyphenyl)sulfonyl]-5benzyloxycarbonyl-diazepine-2-carboxamide (8b):

The 1-[(4-Methoxyphenyl)sulfonyl]-5-benzyloxycarbonyl-diazepine-2-carboxylic acid (0.70 g, 1.56 mmol) is dissolved in methylene chloride (15 mL) at room temperature followed the addition of oxalyl chloride (0.28 mL, 3.20 mmol) and slow addition of DMF (0.12 mL, 1.56 mmol). This solution is stirred for 30 minutes at room temperature. In a separate flask, hydroxylamine hydrochloride (0.43 g, 8 6.24 mmol) in water (5 mL) and THF (7 mL) is stirred at 0° C., and then triethylamine (1.3 mL, 9.12 mmol) is added. This solution is stirred for 15 minutes. The acid chloride solution is added to the hydroxylamine solution at 0° C. and then warmed up to room temperature and stirred for 3 hours. The solution is acidified to pH˜1 with 1N HCl, poured into water and extracted with methylene chloride. The organic extracts are dried (Na₂SO₄) and concentrated down to an oil. The oil is purified by HPLC with a reverse phase column using 65% (95% water, 5% acetonitrile, 0.1% formic acid) and 35% (80% acetonitrile, 20% water) as the eluent.

Example 9 Synthesis of N-Hydroxy-4-[(4-methoxyphenyl)sulfonyl]-thiazepine-5carboxamide

Methyl N-[(4-methoxyphenyl)sulfonyl]-(2-hydroxyethyl)homocysteine (9a):

D,L-Homocysteine (6.0 g, 44.3 mmol) in 2N NaOH (28.8 mL, 57.7 mmol, 1.3 equiv) is stirred at 0° C. under an argon atmosphere. A solution of 2-bromopropanol (6.66 g, 53.3 mol, 1.2 equiv) in ethanol (50 mL) is slowly added dropwise at 0 C. The resulting solution is stirred overnight at room temperature and then the mixture is acidified to pH˜6 with 1 N HCL. The solvent is removed under reduced pressure to leave a thick oil. The penicillamine adduct is then dissolved in dioxane (100 mL) and water (100 mL) and stirred at room temperature. Triethylamine (13.5 g, 133.2 mmol, 3 equiv) is then added to the reaction mixture followed by 4-methoxyphenylsulfonyl chloride (10.0 g, 48.8 mmol. 1.1 equiv). The resulting homogeneous solution is stirred at room temperature for 18 hours and then acidified to pH˜2 with 1N HCl. The solution is poured into water and extracted with methylene chloride. The organic extracts were dried (MgSO₄) and concentrated to an oil under reduced pressure. The resulting oil is diluted in methanol (30 mL) and enough diazomethane in diethyl ether is added to form a yellow solution. The mixture is concentrated under reduced pressure to leave a colorless oil. Purification of the resulting methyl ester is accomplished by chromatography on silica gel using 1/1 hexane/EtOAc as the eluent. The desired product is obtained as a clear, colorless oil. MS (ESI): 364 (M+H⁺), 381 (M+NH₄ ⁺).

Methyl 4-[(4Methoxyphenyl)sulfonyl]-thiazepine-5-carboxylate (9b):

The methyl N-[(4-methoxyphenyl)sulfonyl]-(2-hydroxyethyl)homocysteine (5.23 g, 14.4 mmol) in THF (100 mL) is stirred at room temperature and then triphenylphosphine (4.52 g, 17.3 mmol, 1.2 equiv) followed by diethyl azodicarboxylate (2.76 g, 15.8 mmol. 1.1 equiv) is added. The resulting solution is stirred at room temperature for 2 hours. The solvent is removed and then the thick yellow oil is diluted with methylene chloride and silica get (30 g) is added. The solvent is removed to leave a white powder. This powder is placed upon a chromatography column and eluted with 8/2 hexane/EtOAc. The desired product is obtained as a colorless oil. MS (ESI): 346 (M+H⁺), 363 (M+NH₄ ⁺).

N-Hydroxy-4-[(4-methoxyphenyl)sulfonyl]-thiazepine-5-carboxamide (9c):

The methyl 4-[(4-methoxyphenyl)sulfonyl]-thiazepine-5-carboxylate (1 g, 2.90 mmol) in methanol (50 mL) is stirred at room temperature and the potassium hydroxide, hydroxyl amine solution (Fieser & Fieser Vol 1 ) is added (5 equiv). The resulting solution is stirred at room temperature for 6 h. The reaction mixture is acidified with 1N HCl and then extracted with dichloromethane. The organic extracts were dried (Na₂SO₄) and concentrated to a solid under reduced pressure. The solid is recrystallized from CH₃CN/H₂O to provide a white powder. MS (ESI): 347 (M+H⁺), 364 (M+NH₄ ⁺).

Examples 10-65

The following compounds are made using the methods described and exemplified above.

X Y Z Ar n Example 10 CH₃N 7-CO 2-CH₃ 4-(C₆H₅)O—C₆H₄— 2 Example 11 CH₃N 7-CO 2-C₆H₅CH₂ 4-n-BuO—C₆H₄— 2 Example 12 CH₃N 7-CO 2-CH₃SCH₂CH₂ 4-CH₃O—C₆H_(4—) 2 Example 13 (CH₃)₂CHN 7-CO 6,6-(CH₃)₂ 4-NO₂—C₆H₄— 2 Example 14 (CH₃)₂CHN 7-CO 6,6-(CH₃)₂ 4-i-BuO—C₆H₄— 2 Example 15 (CH₃)₂CHN 7-CO — 4-i-BuO—C₆H₄— 2 Example 16 (CH₃)₃CN 7-CO 6,6-(CH₃)₂ 4-(C₆H₅)O—C₆H₄— 2 Example 17 C₆H₅CH₂N 7-CO 6,6-(CH₃)₂ 4-(C₆H₅)O—C₆H₄— 2 Example 18 (CH₃)₂CHN 7-CO 6,6-(CH₃)₂ 4-(4-F—C₆H₄)O—C₆H₄— 2 Example 19 (CH₃)₂CHN 7-CO — 4-(4-Cl—C₆H₄)O—C₆H₄— 2 Example 20 (CH₃)₂CHN 7-CO — 4-(4-Br—C₆H₄)O—C₆H₄— 2 Example 21 (CH₃)₂CHN 7-CO — 4-(4-Me—C₆H₄)O—C₆H₄— 2 (CH₃)₂CHN 7-CO — 4-n-BuO—C₆H₄— 2 Example 22 (CH₃)₂CHN 7-CO 6,6-(CH₃)₂ 4-(4-F—C₆H₅)—C₆H₄— 2 Example 23 (CH₃)₂CHN 6-CO 5,5-(CH₃)₂ 4-(4-Cl—C₆H₅)—C₆H₄— 1 Example 24 (CH₃)₂CHN 6-CO 5,5-(CH₃)₂ 4-(4-Br—C₆H₅)—C₆H₄— 1 Example 25 CH₃OCH₂CH₂N 6-CO — 4-(4-Me₂N—C₆H₄)—C₆H₄— 1 Example 26 CH₃OCH₂CH₂N 6-CO — 4-(4-CN—C₆H₄)—C₆H₄— 1 Example 27 CH₃OCH₂CH₂N 6-CO — 4-(4-MeO—C₆H₄)—C₆H₄— 1 Example 28 S — — 4-(4-MeO—C₆H₄)O—C₆H₄— 2 Example 29 S — — 4-(4-CN—C₆H₄)O—C₆H₄— 2 Example 30 S — — 4-(4-Me₂N—C₆H₄)O—C₆H₄— 2 Example 31 S — — 4-(4-C₅H₄N)O—C₆H₄— 2 Example 32 S — — 4-(3-C₅H₄N)O—C₆H₄— 2 Example 33 S — — 4-(2-C₅H₄N)O—C₆H₄— 2 Example 34 CH₃CON — — 4-(4-C₅H₄N)O—C₆H₄— 2 Example 35 (CH₃)₂CHCON — — 4-n-BuO—C₆H₄— 2 Example 36 (CH₃)₂CHNHCON — — 4-n-BuO—C₆H₄— 2 Example 37 C₆H₅NHCSN — — 4-n-BuO—C₆H₄— 2 Example 38 (CH₃)₂NCON — — 4-(4-C₅H₄N)O—C₆H₄— 2 Example 39

— — 4-(4-C₅H₄N)O—C₆H₄— 2 Example 40

— — 4-(4-C₅H₄N)O—C₆H₄— 2 Example 41

— — 4-(4-Cl—C₆H₅)—C₆H₄— 2 Example 42 S — — 4-i-PrO—C₆H₄— 2 Example 43 S — — 4-n-PrO—C₆H₄— 2 Example 44 S — — 4-Br—C₆H₄— 2 Example 45 S — — 2-CH₃-4-Br—C₆H₃— 2 Example 46 S — — C₆H₅CH₂CH₂— 2 Example 47 S — — C₆H₅CH₂— 2 Example 48 S — — (4-C₅H₄N)CH₂CH₂— 2 Example 49 S — — (2-C₅H₄N)CH₂CH₂— 2 Example 50 n-BuN 7-CO — 5-(2-pyridinyl)-2-thienyl- 2 Example 51 n-BuN 7-CO — 5-(3-isoxazolyl)-2-thienyl- 2 Example 52 n-BuN 7-CO — 5-(2-(methylthio)pyrimidin- 2 4-yl)-2-thienyl- Example 53 n-BuN 7-CO 6,6-(CH₃)₂ 5-(3-(1-methyl-5- 2 (trifluoromethyl)pyrazolyl)- 2-thienyl- Example 54 n-BuN 7-CO 6,6-(CH₃)₂ 5-(2-pyridinyl)-2-thienyl- 2

Methods:

Examples 10-54 are prepared analogously to Example 1-9 using the appropriately functionalized sulfonyl chloride. The sulfonyl chlorides which are used to prepare the above examples are either purchased from commercial sources or prepared via known methods. For example, the 4-phenoxyphenylsulfonyl chloride used for the preparation of Example 10, was prepared as described by R. J. Cremlyn et al in Aust. J. Chem., 1979, 32, 445.52.

These examples provide the skilled artisan with sufficient guidance as to making the present invention and do not limit it in any way.

These examples provide the skilled artisan with sufficient guidance as to making the present invention and do not limit it in any way.

Composition and Method of Use Examples

The compounds of the invention are useful to prepare compositions for the treatment of ailments and the like. The following composition and method examples do not limit the invention, but provide guidance to the skilled artisan to prepare and use the compounds, compositions and methods of the invention. In each case the compounds formula I may be substituted for the example compound shown below with similar results.

The methods of use exemplified do not limit the invention, but provide guidance to the skilled artisan to use the compounds, compositions and methods of the invention. The skilled practitioner will appreciate that the examples provide guidance and may be varied based on condition and the patient.

Example A

A tablet composition for oral administration, according to the present invention, is made comprising:

Component Amount Example 9 15. mg Lactose 120. mg Maize Starch 70. mg Talc 4. mg Magnesium Stearate 1. mg

Other compounds having a structure according to Formula (I) are used with substantially similar results.

A human female subject weighing 60 kg (132 lbs), suffering from rheumatoid arthritis, is treated by a method of this invention. Specifically, for 2 years, a regimen of three tablets per day is administered orally to said subject.

At the end of the treatment period, the patient is examined and is found to have reduced inflammation, and improved mobility without concomitant pain.

Example B

A capsule for oral administration, according to the present invention, is made comprising:

Component Amount (% w/w) Example 3 15% Polyethylene glycol 85%

Other compounds having a structure according to Formula (I) are used with substantially similar results.

A human male subject weighing 90 kg (198 lbs), suffering from osteoarthritis, is treated by a method of this invention. Specifically, for 5 years, a capsule containing 70 mg of Example 3 is administered daily to said subject.

At the end of the treatment period, the patient is examined via orthoscopy, and found to have no further advancement of erosion/fibrillation of the articular cartilage.

Example C

A saline-based composition for local administration, according to the present invention, is made comprising:

Component Amount (% w/w) Example 13  5% Polyvinyl alcohol 15% Saline 80%

Other compounds having a structure according to Formula (I) are used with substantially similar results.

A patient having deep corneal abrasion applies the drop to each eye twice a day. Healing is speeded, with no visual sequelae.

Example D

An topical composition for local administration, according to the present invention, is made comprising:

Component Composition (% w/v) Compound of Example 3 0.20 Benzalkonium chloride 0.02 Thimerosal 0.002 d-Sorbitol 5.00 Glycine 0.35 Aromatics 0.075 Purified water q.s. Total = 100.00 Total = 100.00

Any of the other compounds having a structure according to Formula (I) are used with substantially similar results.

A patient suffering from chemical burns applies the composition at each dressing change (b.i.d.). Scarring is substantially diminished.

Example E

A inhalation aerosol composition, according to the present invention, is made comprising:

Component Composition (% w/v) Compound of Example 2 5.0 Alcohol 33.0 Ascorbic acid 0.1 Menthol 0.1 Sodium Saccharin 0.2 Propellant (F12, F114) q.s. Total = 100.0

Any of the other compounds having a structure according to Formula (I) are used with substantially similar results.

An asthma sufferer sprays 0.01 mL via a pump actuator into the mouth while inhaling. Asthma symptoms are diminished.

Example F

A topical opthalmic composition, according to the present invention, is made comprising:

Component Composition (% w/v) Compound of Example 5 0.10 Benzalkonium chloride 0.01 EDTA 0.05 Hydroxyethylcellulose (NATROSOL M ™) 0.50 Sodium metabisulfite 0.10 Sodium chloride (0.9%) q.s. Total = 100.0

Any of the other compounds having a structure according to Formula (I) are used with substantially similar results.

A human male subject weighing 90 kg (198 lbs), suffering from corneal ulcerations, is treated by a method of this invention. Specifically, for 2 months, a saline solution containing 10 mg of Example 5 is administered to said subject's affected eye twice-daily.

Example G

A composition for parenteral administration is made comprising:

Component Amount Example 4 100 mg/ml carrier Carrier: sodium citrate buffer with (percent by weight of carrier): lecithin 0.48% carboxymethylcellulose 0.53 povidone 0.50 methyl paraben 0.11 propyl paraben 0.011

The above ingredients are mixed, forming a suspension. Approximately 2.0 ml of the suspension is administered, via injection, to a human subject with a premetastatic tumor. The injection site juxtaposes the tumor. This dosage is repeated twice daily, for approximately 30 days. After 30 days, symptoms of the disease subside, and dosage is gradually decreased to maintain the patient.

Other compounds having a structure according to Formula I are used with substantially similar results.

Example H

A mouthwash composition is prepared;

Component % w/v Example 1 3.00 SDA 40 Alcohol 8.00 Flavor 0.08 Emulsifier 0.08 Sodium Fluoride 0.05 Glycerin 10.00 Sweetener 0.02 Benzoic acid 0.05 Sodium hydroxide 0.20 Dye 0.04 Water balance to 100%

A patient with gum disease uses 1 ml of the mouthwash thrice daily to prevent further oral degeneration.

Other compounds having a structure according to Formula I are used with substantially similar results.

Example I

A lozenge composition is prepared;

Component % w/v Example 3 0.01 Sorbitol 17.50 Mannitol 17.50 Starch 13.60 Sweetener 1.20 Flavor 11.70 Color 0.10 Corn Syrup balance to 100%

A patient uses the losenge to prevent loosening of an implant in the maxilla. Other compounds having a structure according to Formula I are used with substantially similar results.

Example J

Chewing Gum Composition Component w/v % Example 1 0.03 Sorbitol crystals 38.44 Paloja-T gum base* 20.00 Sorbitol (70% aqueous solution) 22.00 Mannitol 10.00 Glycerine 7.56 Flavor 1.00

A patient chews the gum to prevent loosening to prevent loosening of dentures.

Other compounds having a structure according to Formula I are used with substantially similar results.

Example K

Components w/v % USP Water 54.656 Methylparaben 0.05 Propylparaben 0.01 Xanthan Gum 0.12 Guar Gum 0.09 Calcium carbonate 12.38 Antifoam 1.27 Sucrose 15.0 Sorbitol 11.0 Glycerin 5.0 Benzyl Alcohol 0.2 Citric Acid 0.15 Coolant 0.00888 Flavor 0.0645 Colorant 0.0014

Example 1 is prepared by first mixing 80 kg of gylcerin and all of the benzyl alcohol and heating to 65° C., then slowly adding and mixing together methylparaben, propylparaben, water, xanthan gum, and guar gum. Mix these ingredients for about 12 minutes with a Silverson in-line mixer. Then slowly add in the following ingredients in the following order: remaining glycerin, sorbitol, antifoam C, calcium carbonate, citric acid, and sucrose. Separately combine flavors and coolants and then slowly add to the other ingredients. Mix for about 40 minutes.

The patient takes the formulation to prevent flare up of colitis.

All references described herein are hereby incorporated by reference.

While particular embodiments of the subject invention have been described, it will be obvious to those skilled in the art that various changes and modifications of the subject invention can be made without departing from the spirit and scope of the invention. It is intended to cover, in the appended claims, all such modifications that are within the scope of this invention. 

What is claimed is:
 1. A compound having a structure according to Formula (I)

wherein R₁ is H; R₂ is hydrogen, alkyl, or acyl; Ar is COR₃ or SO₂R₄; R₃ is selected from alkoxy, aryloxy, alkyl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and arylalkylamino; R₄ is selected from alkyl, heteroalkyl, aryl, and heteroaryl; X is selected from the group consisting of O, S, SO and SO₂; R₆ is selected from alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and arylalkylamino; R₇ is selected from hydrogen, alkoxy, aryloxy, heteroaryloxy, alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino and arylalkylamino; R₈ is selected from the group consisting of alkyl, aryl, heteroaryl, heteroalkyl, amino, alkylamino, dialkylamino, arylamino, diarylamino and aryalkylamino; R₉ is selected from the group consisting of alkyl, aryl, heteroaryl, and heteroalkyl; W is hydrogen or one or more lower alkyl moieties, or is an alkylene, arylene or heteroarylene bridge between two adjacent or nonadjacent carbons (thus forming a fused ring); Y is independently selected from one or more of hydrogen, hydroxy, SR₁₀, SOR₄, SO₂R₄, alkoxy, and amino, wherein amino is of formula NR₁₁N₁₂, wherein R₁₁ and R₁₂ are independently selected from the group consisting of hydrogen, allyl, heteroalkyl, heteroaryl, aryl, SO₂R₆, COR₇, CSR₈, and PO(R₉)₂; R₁₀ is selected from the group consisting of hydrogen, alkyl, aryl, and heteroaryl; Z is nil, a spiro moiety or an oxo group substituted on the heterocyclic ring; and n is
 2. 2. The compound of claim 1, wherein X is selected from the group consisting of O, S, SO and SO₂.
 3. The compound of claim 1, wherein Ar is SO₂R₄ and R₄ is alkyl, heteroalkyl, aryl or heteroaryl.
 4. The compound of claim 1, wherein Ar is SO₂R₄ and R⁴ is phenyl or substituted phenyl.
 5. The compound of claim 4, wherein Ar is SO₂R₄ and R⁴ is substituted phenyl and the substitution is with hydroxy, alkoxy, nitro or halo.
 6. The compound of claim 5, wherein Ar is substituted with methoxy, bromo, nitro and butoxy.
 7. The compound of claim 6, wherein Ar is substituted at the ortho or para position relative to the sulfonyl.
 8. The compound of claim 1, wherein W is hydrogen or one or more lower alkyl moieties.
 9. The compound of claim 1, wherein W is geminal C₁ to C₄ alkyl.
 10. The compound of claim 1 wherein Z is an oxo moiety substituted on the heterocyclic ring.
 11. A pharmaceutical composition comprising: (a) a safe and effective amount of a compound of claim 1; and (b) a pharmaceutically-acceptable carrier.
 12. A pharmaceutical composition comprising: (a) a safe and effective amount of a compound of claim 4; and (b) a pharmaceutically-acceptable carrier.
 13. A pharmaceutical composition comprising: (a) a safe and effective amount of a compound of claim 5; and (b) a pharmaceutically-acceptable carrier.
 14. A pharmaceutical composition comprising: (a) a safe and effective amount of a compound of claim 9; and (b) a pharmaceutically-acceptable carrier.
 15. A pharmaceutical composition comprising: (a) a safe and effective amount of a compound of claim 10; and (b) a pharmaceutically-acceptable carrier.
 16. A method for treating a disease associated with unwanted metalloprotease activity in a mammalian subject, the method comprising administering to said subject a safe and effective amount of a compound of claim
 1. 17. A method for treating a disease associated with unwanted metalloprotease activity in a mammalian subject, the method comprising administering to said subject a safe and effective amount of a compound of claim
 4. 18. A method for treating a disease associated with unwanted metalloprotease activity in a human or other animal subject, the method comprising administering to said subject a safe and effective amount of a compound of claim
 5. 19. A method for treating a disease associated with unwanted metalloprotease activity in a mammalian subject, the method comprising administering to said subject a safe and effective amount of a compound of claim
 9. 20. A method for treating a disorder modulated by metalloproteases, wherein the disorder is selected from the group consisting of, arthritis, cancer, cardiovascular disorders, skin disorders, ocular disorders, inflammation and gum disease by administering to a mammal in need of such treatment, a sate and effective amount of a metalloprotease inhibitor according to claim
 1. 21. A method for treating a disorder according to claim 20, wherein the disorder is arthritis, and is selected from the group consisting of, osteoarthritis and rheumatoid arthritis.
 22. A method for treating a disorder according to claim 20, wherein the disorder is cancer, and the treatment prevents or arrests tumor growth and metastasis.
 23. A method for treating a disorder according to claim 20, wherein the disorder is a cardiovascular disorder selected from the group consisting of dilated cardiomyopathy, congestive heart failure, atherosclerosis, plaque rupture, reperfusion injury, ischemia, chronic obstructive pulmonary disease, angioplasty restenosis and aortic aneurysm.
 24. A method for treating a disorder according to claim 20, wherein the disorder is an ocular disorder, and is selected from the group consisting of, corneal ulceration, lack of comeal healing, macular degeneration, and pterygium.
 25. A method for treating a disorder according to claim 20, wherein the disorder is gum disease, and is selected from the group consisting of, periodontal disease, and gingivitis.
 26. A method for treating a condition, according to claim 20, wherein the condition is skin condition selected from the group consisting of sprinkle repair and prevention, U. V. skin damages epidermolysis bullosa, psoriasis, scleroderna, atopic dermatitis and scarring.
 27. A method for preventing the loosening of prosthetic devices selected from the group consisting of joint replacements and dental prosthesis by administering to a mammal in need of such treatment, a safe and effective amount of a metalloprotease inhibitor according to claim
 1. 28. A method for treating inflammatory conditions according to claim 20, selected from the group consisting of inflammatory bowel disease, Crohn's Disease, ulcerative colitis, pancreatitis, diverticulitis, acne inflammation, osteomylitis, bronchitis, arthritis and asthma.
 29. A method of treating multiple sclerosis, comprising administering to a mammal in need of such treatment, a safe and effective amount of a metalloprotease inhibitor according to claim
 1. 30. A method for treating musculoskeletal disease or cachexia comprising administering to a mammal in need of such treatment, a safe and effective amount of a metalloprotease inhibitor according to claim
 1. 